Exhaust Manifolds for Turbo?

Renault & Alpine General Discussion

Moderators: eastlmark, BIG_MVS, phildini, Test Moderator, Alpineandy

no avatar
User

Alan Moore

Rank

Non Member

Posts

251

Joined

Thu Jul 01, 2004 1:04 pm

Location

Brisbane Australia


Has thanked: 0 time
Been thanked: 4 times

Exhaust Manifolds for Turbo?

Postby Alan Moore » Sun Dec 18, 2005 10:46 am

Does any aftermarket company make decent exhaust manifolds for the GTA Turbo? I am starting to assemble my 2975cc motor for my Turbo, and have decided I may spend the extra for a set of exhaust manifolds.

It is of course possible to get custom ones made here, and if I do I will move to an external wastegate type, if possible to fit in, so as to use a GT30 Garrett turbo.
GTA V6 Turbo
Renault 4CV 16TS Power
BMW 2002 Tii M3 Power
User avatar
User

David Gentleman

Rank

Non Member

Posts

3474

Joined

Thu Apr 15, 2004 8:10 am

Location

Colchester, Essex


Has thanked: 0 time
Been thanked: 0 time

Postby David Gentleman » Sun Dec 18, 2005 11:59 am

Only custom I'm afraid. Ive designed a system using the 3-1 mandrel bend atmo manifolds, and a link pipe arrangement bringing the two together to a turbo flange, but the turbo is now low down in front of the engine (in front of the main pulley). This system will require relocation of the oil feeds and return (return needs to be tapped into the front of the sump face), and bin the original silencer and have a complete new downpipe and silencer system, but this is designed for a V-Band type 3" outlet, so it would need changing to fit your turbo.

Intercooler piping may need altering to as I designed it to work with a new chargecooler.

No restrictions, 'relatively' inexpensive, only suitable for a 'big' turbo to get the most out of it, but laggy :wink:
Image
User avatar
User

ben

Rank

Non Member

Posts

202

Joined

Mon Apr 19, 2004 12:43 pm

Location

Grantham


Has thanked: 0 time
Been thanked: 0 time

Postby ben » Sun Dec 18, 2005 5:55 pm

Has anyone ever looked into a twin turbo set-up? With a completely different exhaust and air intake system? Simualr to the Nissan 300 zx exhaust system.
I know it would be costly, but a set-up like that should give some serious benefits!
User avatar
User

David Gentleman

Rank

Non Member

Posts

3474

Joined

Thu Apr 15, 2004 8:10 am

Location

Colchester, Essex


Has thanked: 0 time
Been thanked: 0 time

Postby David Gentleman » Sun Dec 18, 2005 6:11 pm

Yes, the two manifolds in the system I said above can be used for twin turbos, but its twice the cost, two lots of exhaust systems, two chargecoolers/intercoolers, and really needs a new inlet manifold system to make the most of it.

More power is available using just one decent turbo, and its far simpler. :D
Image
no avatar
User

Alan Moore

Rank

Non Member

Posts

251

Joined

Thu Jul 01, 2004 1:04 pm

Location

Brisbane Australia


Has thanked: 0 time
Been thanked: 4 times

Postby Alan Moore » Mon Dec 19, 2005 11:07 am

I am looking to keep the turbo in the same position mostly to make it look standard, and save hassles, and I do like the fan blower system. I would like to run a ball bearing turbo, but there does not seem to be any T3 of suitable size with an internal wastegate, bar an HKS at twice the price of a Garrett.
GTA V6 Turbo
Renault 4CV 16TS Power
BMW 2002 Tii M3 Power
User avatar
User

David Gentleman

Rank

Non Member

Posts

3474

Joined

Thu Apr 15, 2004 8:10 am

Location

Colchester, Essex


Has thanked: 0 time
Been thanked: 0 time

Postby David Gentleman » Mon Dec 19, 2005 11:24 am

The turbo facilities I use can supply a roller bearing core to fit standard T3 components, but its very expensive (over £800)

The GT series is the most affordable way, and they still have the same T3 mounting footprint. You will just have to modify the oil feeds and returns slightly, and modify the downpipe flange.
Image
User avatar
User

Tony Smith

Rank

Non Member

Posts

1407

Joined

Fri Apr 16, 2004 4:50 pm

Location

Kent


Has thanked: 0 time
Been thanked: 19 times

Roller bearing turbos

Postby Tony Smith » Mon Dec 19, 2005 4:14 pm

I looked at this when I was sourcing the hybrid for my 3 litre and the verdict was unless your going to run 20psi + all the time there was very little benefit in using a roller bearing turbo. They spin up a little quicker but cost twice as much! If moneys no object then have the best but otherwise something based around a Escort Cossie T34 is a good size. Turbo Technics built me a T38 which is pretty much the biggest T3 based turbo you can buy - uses mostly T04 parts with the lots of machining to fit them. Bolts sraight up but you do need to alter the air inlet and plenum pipes and the heat shields have to be modified to fit
Alpines - GTA 3.0 Turbo, GTA 3.0 Inj (Project DD), GTA 6.2 V8 (500 bhp) , R32 Skyline GTR, BMW Alpina B10 635 Highline, Alpina B10 E39 5 Series, Jaguar 4.2 XKR, Laguna 205GT, BMW 120d.
no avatar
User

Alan Moore

Rank

Non Member

Posts

251

Joined

Thu Jul 01, 2004 1:04 pm

Location

Brisbane Australia


Has thanked: 0 time
Been thanked: 4 times

Postby Alan Moore » Tue Dec 20, 2005 1:36 pm

I like the ball bearing centre as it certainly does make the turbo make boost earlier and so much nicer to drive. It also allows you to run bigger A/R and not end up with a lag monster. I am looking at 0.9 Bar boost. This is what I have seen in practice with many Japanese motors,(lower boost, comparitively small turbo) and then others end up running huge turbos that make massive numbers at 5000 rpm that are great on dragstrip and hopeless for anything else.

Tony, what A/R does your turbo have on the turbine and compressor? Is it running yet?

Anyway, at this stage it is all some months away, and I will see what happens when the theories are put into practice.
GTA V6 Turbo
Renault 4CV 16TS Power
BMW 2002 Tii M3 Power
User avatar
User

Tony Smith

Rank

Non Member

Posts

1407

Joined

Fri Apr 16, 2004 4:50 pm

Location

Kent


Has thanked: 0 time
Been thanked: 19 times

ER?

Postby Tony Smith » Wed Dec 21, 2005 7:48 am

I know its a .63 housing but I can't remember whether the trim wheel is 55 or 60. Its laggier than standard but comes on boost very smoothly and you can get full boost by 3000 rpm without a problem. If I could sort out an ecu I'd be able to tell you what it went like!
Alpines - GTA 3.0 Turbo, GTA 3.0 Inj (Project DD), GTA 6.2 V8 (500 bhp) , R32 Skyline GTR, BMW Alpina B10 635 Highline, Alpina B10 E39 5 Series, Jaguar 4.2 XKR, Laguna 205GT, BMW 120d.
User avatar
User

gt5

Rank

Non Member

Posts

594

Joined

Thu Nov 17, 2005 5:35 pm

Location

york


Has thanked: 0 time
Been thanked: 0 time

Re: ER?

Postby gt5 » Wed Dec 21, 2005 9:17 am

If I could sort out an ecu I'd be able to tell you what it went like!

Come on Dave :)
User avatar
User

peterg

Rank

Non Member

Posts

2501

Joined

Wed Apr 14, 2004 10:26 pm

Location

Cumbria


Has thanked: 0 time
Been thanked: 0 time

Postby peterg » Wed Dec 21, 2005 11:49 am

Tony has an ECU....he just hasnt got it working yet...come on Tony!!!! :D
User avatar
User

Tony Smith

Rank

Non Member

Posts

1407

Joined

Fri Apr 16, 2004 4:50 pm

Location

Kent


Has thanked: 0 time
Been thanked: 19 times

Nobody will do it!

Postby Tony Smith » Wed Dec 21, 2005 2:09 pm

Nobody wants to do it! The fact that its an unknown quantity car wise and that the Adaptronic is not a well known ecu seems to be putting people off. ARR have given up, I may try and source an A610 ECU and then just get it chipped.
Alpines - GTA 3.0 Turbo, GTA 3.0 Inj (Project DD), GTA 6.2 V8 (500 bhp) , R32 Skyline GTR, BMW Alpina B10 635 Highline, Alpina B10 E39 5 Series, Jaguar 4.2 XKR, Laguna 205GT, BMW 120d.
User avatar
User

David Gentleman

Rank

Non Member

Posts

3474

Joined

Thu Apr 15, 2004 8:10 am

Location

Colchester, Essex


Has thanked: 0 time
Been thanked: 0 time

Postby David Gentleman » Wed Dec 21, 2005 6:11 pm

Tony, bring it down to me at the new workshop and we'll sort it.

Once its done, you (and everybody else) will be sorted!
Image


  • Advertisement

Who is online

Users browsing this forum: No registered users and 190 guests

Powered by phpBB ® | Renault' and 'Alpine' are trademarks of Renault S.A.S. or its subsidiaries and are used with kind permission of Renault France