An interesting idea

[Keithr0]

I used to flick through "Racecar Engineering" magazine at the
newsagents. It seemed to have some interesting stuff in it but not
enough to justify spending $18 per copy. I have online subscription to a
couple of mags, and when the same people offered an annnual subscription
to "Racecar Engineering" for less than the cost of 2 copies at the
newsie, I took it up.

There were a couple of interesting articles. The restoration of a D type
that verged on the fanatical (it had been repaired in the past with the
wrong sized rivets so they welded up the holes and re-drilled for the
correct ones) that must have cost a motza. Beautiful job though.

The interesting idea though was from a guy into English hill climbs.
They are a bit like a drag race one at a time from a standing start
against the clock up a hilly winding English lane. He has built an AWD
sports racer with a 1700cc Ford BDT that gives 485Kw. He had a problem
with turbo lag, so his interesting idea was to split the output of the
compressor two ways. One, of course feeds the engine intake, the other
goes to a burner can where petrol is injected and burnt, the output of
which joins the exhaust upstream of the turbine. In essence it's a
little jet engine, that provides a constant flow of gas to keep the
turbo spinning no matter what the throttle position. the constant flow
also means that the blown diffuser is always blown, it produces 70lb of
downforce even when standing still.

A neat idea.

[Daryl]

Post by Keithr0
I used to flick through "Racecar Engineering" magazine at the
newsagents. It seemed to have some interesting stuff in it but not
enough to justify spending $18 per copy. I have online subscription to a
couple of mags, and when the same people offered an annnual subscription
to "Racecar Engineering" for less than the cost of 2 copies at the
newsie, I took it up.
There were a couple of interesting articles. The restoration of a D type
that verged on the fanatical (it had been repaired in the past with the
wrong sized rivets so they welded up the holes and re-drilled  for the
correct ones) that must have cost a motza. Beautiful job though.
The interesting idea though was from a guy into English hill climbs.
They are a bit like a drag race one at a time from a standing start
against the clock up a hilly winding English lane. He has built an AWD
sports racer with a 1700cc Ford BDT that gives 485Kw. He had a problem
with turbo lag, so his interesting idea was to split the output of the
compressor two ways. One, of course feeds the engine intake, the other
goes to a burner can where petrol is injected and burnt, the output of
which joins the exhaust upstream of the turbine. In essence it's a
little jet engine, that provides a constant flow of gas to keep the
turbo spinning no matter what the throttle position. the constant flow
also means that the blown diffuser is always blown, it produces 70lb  of
downforce even when standing still.
A neat idea.

Sounds brilliant in that application where each run probably only lasts
a couple of minutes if that.
Hillclimbs are a good place to see innovation especially in open classes
where there aren't too many rules.
What Porsche have done with the latest 911's is to use an electric motor
to initially spin up the turbo, funny thing is because it uses
electricity to partly "power" the engine they get to call it a "hybrid".
Significant increase in power with only one turbo and lower emissions
because the turbo is always near boost rpm.

[Noddy]

Post by Keithr0
I used to flick through "Racecar Engineering" magazine at the
newsagents. It seemed to have some interesting stuff in it but not
enough to justify spending $18 per copy. I have online subscription to a
couple of mags, and when the same people offered an annnual subscription
to "Racecar Engineering" for less than the cost of 2 copies at the
newsie, I took it up.
There were a couple of interesting articles. The restoration of a D type
that verged on the fanatical (it had been repaired in the past with the
wrong sized rivets so they welded up the holes and re-drilled  for the
correct ones) that must have cost a motza. Beautiful job though.

That's getting pretty out there :)

Post by Keithr0
The interesting idea though was from a guy into English hill climbs.
They are a bit like a drag race one at a time from a standing start
against the clock up a hilly winding English lane. He has built an AWD
sports racer with a 1700cc Ford BDT that gives 485Kw. He had a problem
with turbo lag, so his interesting idea was to split the output of the
compressor two ways. One, of course feeds the engine intake, the other
goes to a burner can where petrol is injected and burnt, the output of
which joins the exhaust upstream of the turbine. In essence it's a
little jet engine, that provides a constant flow of gas to keep the
turbo spinning no matter what the throttle position. the constant flow
also means that the blown diffuser is always blown, it produces 70lb  of
downforce even when standing still.
A neat idea.

Sounds complicated. I think for something like that where instant off
idle boost was required I'd just run a blower.

[Keithr0]

Post by Noddy

Post by Keithr0
I used to flick through "Racecar Engineering" magazine at the
newsagents. It seemed to have some interesting stuff in it but not
enough to justify spending $18 per copy. I have online subscription to
a couple of mags, and when the same people offered an annnual
subscription to "Racecar Engineering" for less than the cost of 2
copies at the newsie, I took it up.
There were a couple of interesting articles. The restoration of a D
type that verged on the fanatical (it had been repaired in the past
with the wrong sized rivets so they welded up the holes and re-
drilled  for the correct ones) that must have cost a motza. Beautiful
job though.

That's getting pretty out there :)

I think that it's a case of

If you've got the money honey,
We've got what you need.

Sadly the car may not even exist any more the owners house is/was on
Mullholland drive.

Post by Noddy

Post by Keithr0
The interesting idea though was from a guy into English hill climbs.
They are a bit like a drag race one at a time from a standing start
against the clock up a hilly winding English lane. He has built an AWD
sports racer with a 1700cc Ford BDT that gives 485Kw. He had a problem
with turbo lag, so his interesting idea was to split the output of the
compressor two ways. One, of course feeds the engine intake, the other
goes to a burner can where petrol is injected and burnt, the output of
which joins the exhaust upstream of the turbine. In essence it's a
little jet engine, that provides a constant flow of gas to keep the
turbo spinning no matter what the throttle position. the constant flow
also means that the blown diffuser is always blown, it produces 70lb
of downforce even when standing still.
A neat idea.

Sounds complicated. I think for something like that where instant off
idle boost was required I'd just run a blower.

How boring.

[jonz]

Post by Keithr0

Post by Noddy

Post by Keithr0
I used to flick through "Racecar Engineering" magazine at the
newsagents. It seemed to have some interesting stuff in it but not
enough to justify spending $18 per copy. I have online subscription
to a couple of mags, and when the same people offered an annnual
subscription to "Racecar Engineering" for less than the cost of 2
copies at the newsie, I took it up.
There were a couple of interesting articles. The restoration of a D
type that verged on the fanatical (it had been repaired in the past
with the wrong sized rivets so they welded up the holes and re-
drilled  for the correct ones) that must have cost a motza.
Beautiful job though.

That's getting pretty out there :)

I think that it's a case of
If you've got the money honey,
We've got what you need.
Sadly the car may not even exist any more the owners house is/was on
Mullholland drive.

Post by Noddy

Post by Keithr0
The interesting idea though was from a guy into English hill climbs.
They are a bit like a drag race one at a time from a standing start
against the clock up a hilly winding English lane. He has built an
AWD sports racer with a 1700cc Ford BDT that gives 485Kw. He had a
problem with turbo lag, so his interesting idea was to split the
output of the compressor two ways. One, of course feeds the engine
intake, the other goes to a burner can where petrol is injected and
burnt, the output of which joins the exhaust upstream of the
turbine. In essence it's a little jet engine, that provides a
constant flow of gas to keep the turbo spinning no matter what the
throttle position. the constant flow also means that the blown
diffuser is always blown, it produces 70lb  of downforce even when
standing still.
A neat idea.

Sounds complicated. I think for something like that where instant off
idle boost was required I'd just run a blower.

How boring.

~~~~~~~~~~~~~~~~~~~~~~~~~~~

 Typical windy reply.😉

[Noddy]

Post by Keithr0

Post by Noddy
That's getting pretty out there :)

I think that it's a case of
If you've got the money honey,
We've got what you need.
Sadly the car may not even exist any more the owners house is/was on
Mullholland drive.

Shit. I feel *so* sorry for those poor bastards over there. The aerial
pics of the devastation are heartbreaking with what look to be entire
suburbs wiped out.

The damage bill is going to be unimaginable....

Post by Keithr0

Post by Noddy

Post by Keithr0
A neat idea.

Sounds complicated. I think for something like that where instant off
idle boost was required I'd just run a blower.

How boring.

Maybe, but it would work better than any turbo system at generating
boost off idle.

[Xeno]

Post by Noddy

Post by Keithr0

Post by Noddy
That's getting pretty out there :)

I think that it's a case of
If you've got the money honey,
We've got what you need.
Sadly the car may not even exist any more the owners house is/was on
Mullholland drive.

Shit. I feel *so* sorry for those poor bastards over there. The aerial

You do? Funny, your attitude to climate change doesn't indicate that!

Post by Noddy
pics of the devastation are heartbreaking with what look to be entire
suburbs wiped out.
The damage bill is going to be unimaginable....

So will your future insurance premiums.

Post by Noddy

Post by Keithr0

Post by Noddy

Post by Keithr0
A neat idea.

Sounds complicated. I think for something like that where instant off
idle boost was required I'd just run a blower.

How boring.

Maybe, but it would work better than any turbo system at generating
boost off idle.

What a load of utter crap. VGT darren, ever heard of it? Been around for
years on diesels. Oh, yeah, forgot, you only *imagine* you're in the
motor trade.

[Clocky]

Post by Keithr0
I used to flick through "Racecar Engineering" magazine at the
newsagents. It seemed to have some interesting stuff in it but not
enough to justify spending $18 per copy. I have online subscription to a
couple of mags, and when the same people offered an annnual subscription
to "Racecar Engineering" for less than the cost of 2 copies at the
newsie, I took it up.
There were a couple of interesting articles. The restoration of a D type
that verged on the fanatical (it had been repaired in the past with the
wrong sized rivets so they welded up the holes and re-drilled  for the
correct ones) that must have cost a motza. Beautiful job though.
The interesting idea though was from a guy into English hill climbs.
They are a bit like a drag race one at a time from a standing start
against the clock up a hilly winding English lane. He has built an AWD
sports racer with a 1700cc Ford BDT that gives 485Kw. He had a problem
with turbo lag, so his interesting idea was to split the output of the
compressor two ways. One, of course feeds the engine intake, the other
goes to a burner can where petrol is injected and burnt, the output of
which joins the exhaust upstream of the turbine. In essence it's a
little jet engine, that provides a constant flow of gas to keep the
turbo spinning no matter what the throttle position. the constant flow
also means that the blown diffuser is always blown, it produces 70lb  of
downforce even when standing still.
A neat idea.

Maybe OK for the application but it sounds unreliable outside of that.

[Keithr0]

Post by Clocky

Post by Keithr0
I used to flick through "Racecar Engineering" magazine at the
newsagents. It seemed to have some interesting stuff in it but not
enough to justify spending $18 per copy. I have online subscription to
a couple of mags, and when the same people offered an annnual
subscription to "Racecar Engineering" for less than the cost of 2
copies at the newsie, I took it up.
There were a couple of interesting articles. The restoration of a D
type that verged on the fanatical (it had been repaired in the past
with the wrong sized rivets so they welded up the holes and re-
drilled  for the correct ones) that must have cost a motza. Beautiful .
job though.
The interesting idea though was from a guy into English hill climbs.
They are a bit like a drag race one at a time from a standing start
against the clock up a hilly winding English lane. He has built an AWD
sports racer with a 1700cc Ford BDT that gives 485Kw. He had a problem
with turbo lag, so his interesting idea was to split the output of the
compressor two ways. One, of course feeds the engine intake, the other
goes to a burner can where petrol is injected and burnt, the output of
which joins the exhaust upstream of the turbine. In essence it's a
little jet engine, that provides a constant flow of gas to keep the
turbo spinning no matter what the throttle position. the constant flow
also means that the blown diffuser is always blown, it produces 70lb
of downforce even when standing still.
A neat idea.

Maybe OK for the application but it sounds unreliable outside of that.

A specialised solution to a particular problem.

[Daryl]

Post by Keithr0

Post by Clocky

Post by Keithr0
I used to flick through "Racecar Engineering" magazine at the
newsagents. It seemed to have some interesting stuff in it but not
enough to justify spending $18 per copy. I have online subscription
to a couple of mags, and when the same people offered an annnual
subscription to "Racecar Engineering" for less than the cost of 2
copies at the newsie, I took it up.
There were a couple of interesting articles. The restoration of a D
type that verged on the fanatical (it had been repaired in the past
with the wrong sized rivets so they welded up the holes and re-
drilled  for the correct ones) that must have cost a motza. Beautiful .
job though.
The interesting idea though was from a guy into English hill climbs.
They are a bit like a drag race one at a time from a standing start
against the clock up a hilly winding English lane. He has built an
AWD sports racer with a 1700cc Ford BDT that gives 485Kw. He had a
problem with turbo lag, so his interesting idea was to split the
output of the compressor two ways. One, of course feeds the engine
intake, the other goes to a burner can where petrol is injected and
burnt, the output of which joins the exhaust upstream of the turbine.
In essence it's a little jet engine, that provides a constant flow of
gas to keep the turbo spinning no matter what the throttle position.
the constant flow also means that the blown diffuser is always blown,
it produces 70lb of downforce even when standing still.
A neat idea.

Maybe OK for the application but it sounds unreliable outside of that.

A specialised solution to a particular problem.

Certainly an interesting approach, if it worked its a bonus.
Sometimes thinking outside the box is how innovations come about, most
fail but you occasionally get a winner.

[Xeno]

Post by Daryl

Post by Keithr0

Post by Clocky

Post by Keithr0
I used to flick through "Racecar Engineering" magazine at the
newsagents. It seemed to have some interesting stuff in it but not
enough to justify spending $18 per copy. I have online subscription
to a couple of mags, and when the same people offered an annnual
subscription to "Racecar Engineering" for less than the cost of 2
copies at the newsie, I took it up.
There were a couple of interesting articles. The restoration of a D
type that verged on the fanatical (it had been repaired in the past
with the wrong sized rivets so they welded up the holes and re-
drilled  for the correct ones) that must have cost a motza. Beautiful .
job though.
The interesting idea though was from a guy into English hill climbs.
They are a bit like a drag race one at a time from a standing start
against the clock up a hilly winding English lane. He has built an
AWD sports racer with a 1700cc Ford BDT that gives 485Kw. He had a
problem with turbo lag, so his interesting idea was to split the
output of the compressor two ways. One, of course feeds the engine
intake, the other goes to a burner can where petrol is injected and
burnt, the output of which joins the exhaust upstream of the
turbine. In essence it's a little jet engine, that provides a
constant flow of gas to keep the turbo spinning no matter what the
throttle position. the constant flow also means that the blown
diffuser is always blown, it produces 70lb of downforce even when
standing still.
A neat idea.

Maybe OK for the application but it sounds unreliable outside of that.

A specialised solution to a particular problem.

Certainly an interesting approach, if it worked its a bonus.
Sometimes thinking outside the box is how innovations come about, most
fail but you occasionally get a winner.

This one is most definitely not a winner.

[Xeno]

Post by Clocky

Post by Keithr0
I used to flick through "Racecar Engineering" magazine at the
newsagents. It seemed to have some interesting stuff in it but not
enough to justify spending $18 per copy. I have online subscription to
a couple of mags, and when the same people offered an annnual
subscription to "Racecar Engineering" for less than the cost of 2
copies at the newsie, I took it up.
There were a couple of interesting articles. The restoration of a D
type that verged on the fanatical (it had been repaired in the past
with the wrong sized rivets so they welded up the holes and re-
drilled  for the correct ones) that must have cost a motza. Beautiful
job though.
The interesting idea though was from a guy into English hill climbs.
They are a bit like a drag race one at a time from a standing start
against the clock up a hilly winding English lane. He has built an AWD
sports racer with a 1700cc Ford BDT that gives 485Kw. He had a problem
with turbo lag, so his interesting idea was to split the output of the
compressor two ways. One, of course feeds the engine intake, the other
goes to a burner can where petrol is injected and burnt, the output of
which joins the exhaust upstream of the turbine. In essence it's a
little jet engine, that provides a constant flow of gas to keep the

Jet engines typically compress the mixture before firing it for reasons
of efficiency. What you are describing is more like the pulse jets used
in the German V1 in WW2. https://en.wikipedia.org/wiki/Pulsejet

Post by Clocky

Post by Keithr0
turbo spinning no matter what the throttle position. the constant flow
also means that the blown diffuser is always blown, it produces 70lb
of downforce even when standing still.
A neat idea.

A piss poor idea that is needlessly complex.

Post by Clocky
Maybe OK for the application but it sounds unreliable outside of that.

Sounds like bullshit. The diesel engine world has that particular issue
sorted with these;

https://highwayandheavyparts.com/what-are-the-benefits-of-vgt-turbos-features-how-they-function/

Variable geometry turbos do not have a wastegate to regulate
exhaust flow. The need for a wastegate turbo is to balance
the air fuel ratio. Having a wastegate lets the turbocharger
act like a big turbo at low RPM, and a standard size turbo
at higher RPM.

And;

https://x-engineer.org/variable-geometry-turbocharger-vgt/

The whole idea is to keep the turbo spooled up. Obvious answer is to
control the *effectiveness* of the exhaust gas flow and the VGT does it
with variable vanes.

These cars, and others, use VGTs;

https://www.orovel.net/insights/ford-ecoboost-500-the-pioneer-for-downsizing-gets-bigger?rq=VGT


https://www.orovel.net/insights/blog-post-title-two-yjwjx?rq=VGT

https://agpturbo.com/borg-warner-bv50-porsche-997-upgrade/

On diesels it is simpler because there is no throttling of intake air,
and EGT is lower.

On petrol engins it would work best with direct petrol injection because
you can dispense with the throttle plate on these - dpending upon how
you arrange engine management. Also EGT runs, typically, 200-300C higher
in a petrol engine.