Does anyone know of any shallow tbs ie think of them sat on top of a v6 pointing upwards with limited room above for a plenum / filter arrangement.

Was thinking of using jenveys but costs and size are limiting this a bit!

I saw claretoo's tb set up on the mazda v6 and it got me thinking....

Dont know if this wil help, GSXR 600 very compact, looking down the throat only 85mm and approx 140 high inc injectors.

Mike.

But don't forget there is a minimum distance between valve centre and butterfly and butterfly to trumpet if you want to tune it properly. The jenvey site is quire useful as it has info on that sort of thing. iirc for road car engine rpm you need about 200mm for each of the above.
Regards
Hugh

Yeah you are right i had forgotten that. Will take another look at the jenveys and their inlet mainfold.

If its a V6 engine you will need two sets of TBs from something like a Triumph triple.
There was a Mazda V6 engined Fury at Stafford show with just such a setup. Very neat with short carbon trumpets and a carbon airbox. Management was by Megasquirt. This could be the one you refer to.
Sounded superb!!
There had been some mapping issues I believe.
On a larger V6 they should be more amenable I would think. I can't remember what size they were.
If its a BIG V6 then you could try three sets of TBs from an Aprilia RSV, mounted crosswise. This would take care of the port spacing problem. And they shouldn't be too expensive, especially when compared to Jenvey prices. They are 48mm IIRC.
Straight off one 60 degree V6 onto another!!
And don't worry about inlet tract lengths. They mount virtually straight to the head on the Aprilia.
Or consider a similar setup using Suzuki TL units. Some of these have twin injectors, I believe.
Food for thought, hopefully.
Geoff

[Edited on 24/9/08 by SPYDER]

quote:

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Originally posted by SPYDER
If its a V6 engine you will need two sets of TBs from something like a Triumph triple.
There was a Mazda V6 engined Fury at Stafford show with just such a setup. Very neat with short carbon trumpets and a carbon airbox. Management was by Megasquirt. This could be the one you refer to.
Sounded superb!!
There had been some mapping issues I believe.
On a larger V6 they should be more amenable I would think. I can't remember what size they were.
If its a BIG V6 then you could try three sets of TBs from an Aprilia RSV, mounted crosswise. This would take care of the port spacing problem. And they shouldn't be too expensive, especially when compared to Jenvey prices. They are 48mm IIRC.
Straight off one 60 degree V6 onto another!!
And don't worry about inlet tract lengths. They mount virtually straight to the head on the Aprilia.
Or consider a similar setup using Suzuki TL units. Some of these have twin injectors, I believe.
Food for thought, hopefully.
Geoff

[Edited on 24/9/08 by SPYDER]

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quote:

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Originally posted by zilspeed

quote:

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Originally posted by SPYDER
If its a V6 engine you will need two sets of TBs from something like a Triumph triple.
There was a Mazda V6 engined Fury at Stafford show with just such a setup. Very neat with short carbon trumpets and a carbon airbox. Management was by Megasquirt. This could be the one you refer to.
Sounded superb!!
There had been some mapping issues I believe.
On a larger V6 they should be more amenable I would think. I can't remember what size they were.
If its a BIG V6 then you could try three sets of TBs from an Aprilia RSV, mounted crosswise. This would take care of the port spacing problem. And they shouldn't be too expensive, especially when compared to Jenvey prices. They are 48mm IIRC.
Straight off one 60 degree V6 onto another!!
And don't worry about inlet tract lengths. They mount virtually straight to the head on the Aprilia.
Or consider a similar setup using Suzuki TL units. Some of these have twin injectors, I believe.
Food for thought, hopefully.
Geoff

[Edited on 24/9/08 by SPYDER]

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For a small V6, you could use 1 1/2 sets of 4 cylinder bike ones. 2-2-2 rather than 3-3.

A small displacement V6 on throttle bodies is quite an attractive thought actually.

Just as a reminder, here's a Rover KV6 on throttle bodies.
Les Mutch in the Dax KV6 at Doune

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There are several sets of Aprilia TBs on fleabay as I type. No bids on any. £10 - £20. Go and look at the pics. The outlet throats are angled outward to suit the Vee engine. They look just the ticket!
Geoff

Those aprilas look just the ticket!

it's on a 2.5 ford duratec st200.

I can see a few problems with those Aprillia TB's - one being that the butterflies will side-on to the ports (I believe your engine has two inlet ports per cylinder , this would bias the flow to just one ?) , and with them being very close together and angled you will need a longish manifold to connect to the head which may add a bit of height ?

Have a look at Suzuki TL ones. They are individual IIRC.
Geoff.

Just been through 244 sets of tbs on ebay, my brain hurts...

Claretoo could you measure the distance from your manifold mounting plate to top of your trumpet if you get chance?

Yep - can do - sorry about the delay , I forgot where this thread was and couldn't find it
Just to throw another idea out there , here is a KLDE V6 (same engine I just bought for mine)in an Mx5 on GSXR600 throttle bodies (makes 180hp at the wheels )


KL V6 on ITB's

oops..........that should read GSXR1000 TB's

[Edited on 28/9/08 by clairetoo]

cheers clarertoo, i'm too-ing and fro-ing with this one...
Do you have any more links or pics to that install above, would be interested to see how it's been done.

I'm also a bit concerned about the on / off throttle response / need for a cam system.... more work!

Sorry I dont have any more info - but here are a couple of vidio's of what other's are doing

linky 1

linky 2

Well I've just had a quote for
6no Jenvey tb's
2 no inlet manifolds
2 no fuel rails
6 no trumpets
1 linkage setup
(ie still more stuff to buy)

£1700

If i'm doing this it's bike tbs then!

My cost for the same .....
2 set's of Triumph TB's = £65
1 length of ally fuel rail = £35
2 bike throttle cables = £12.70
6 carbon bellmouth's = approx 1/2 metre of carbon mat + small quantity of resin (about £30 including the ally to turn the former)

Doing it all myself = priceless

Oh , and I've just measured the TB's - from the adapter plate to the top of the trumpets is about 145mm .

Thanks mate. Much appreciated.
If i do this route i think the problem will be getting the manifolds to mount to the head and adapt to the tb shape in as short a distance as possible.

Still thinking... What is everyone using for fuel rails on respaced bodies?

One good thing about the Triumph `bodies is they are allready `port shaped` and have a bolt-on flange , so just an adapter plate needed
Foe fuel rail I used some billet stuff from Ross Machine Racing - even with the postage from the states it was still cheaper than buying it here

quote:

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Originally posted by clairetoo
Foe fuel rail I used some billet stuff from Ross Machine Racing - even with the postage from the states it was still cheaper than buying it here

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quote:

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Originally posted by clairetoo

Engine from above

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The fittings are just 1/4 bspt / 8mm hose tails from work
The bore of the fuel rail is a bit big , but I've `stuck` them in with a good thread lock'n'seal and no problems or leaks

Aah. I went for M14x1.5 as it's the closest size to tap into the 1/2" bore, but it meant I then needed adaptors and all sorts

Anyone any idea where the injector is here? Is it firing into the tb?!



They look ideal in terms of height and look as though linkage would be do-able. Downside ducati 748s so not cheap.

Claretoo, do you know the exact model your came from?

Look's like the injecters are squirting straight into the bellmouth's - great for mid range/top end , but may be a bit interesting starting or low revs/light throttle .
Mine are the same as these (later one's are a block of three rather than separate `bodies )