T3 garret

Eliot · Post by **Eliot** » Tue Feb 03, 2009 1:25 pm

Dont waste money getting anodized billet stuff just yet. I've got standard actuators on mine and have been up to 12psi of boost - not tried any higher so far.

look at the photos here:
http://www.mez.co.uk/turbo6.html
you can see them fitted.

bones · Post by **bones** » Wed Feb 04, 2009 11:31 am

cheers all, i will get a book so as i dont have to keep asking to many ???, and cossie stuff it is, but some bling is

.and found a step by step guide to making the manifolds

rich

bones · Post by **bones** » Sat Sep 19, 2009 2:47 pm

Ok im dragging this up again ,for a rover v8, the manifolds arent a problem as i can make them, but the fuel side is puzzling,is my weber 500 is any good with a top hat or does it relly need a holley, or would SUs be ok, and could it still be able to make good bhp with them???, ,and the use of a standard crank ,std rods but use forged pistons, is that right

rich

topcatcustom · Post by **topcatcustom** » Sun Sep 20, 2009 5:30 pm

You wanting a blow through system then Rich? If so I think SU's have to be modified a bit due to their variable venturi design, but I could have just completely made that up

so someone will have to clarify!

Personally I have never liked the look or idea of a top hat on an AFB, and you may have problems with air leaks. As I am slowly being drawn over to the dark side

, have you thought about injection?

TC

bones · Post by **bones** » Sun Sep 20, 2009 5:42 pm

no darkside for me, to complicated all that injection stuff, not sure about blow or suck through, i would think a suck through system would be easier using S,Us, ,

rich

topcatcustom · Post by **topcatcustom** » Sun Sep 20, 2009 6:51 pm

Suck through would be easier, Chodjin may sell you his 2" SU's that were on his 3.9 TT sucker if you ask nicely!!! Performance wise not sure which is better...

chodjinn · Post by **chodjinn** » Mon Sep 21, 2009 10:02 am

I have the adapters for the turbos as well, and throttle linkages.

bones · Post by **bones** » Mon Sep 21, 2009 2:19 pm

PM sent

rich

ChrisJC · Post by **ChrisJC** » Mon Sep 21, 2009 2:22 pm

You can do blow-through SU's. Metro & Montego Turbo's had them. There were some alterations however to pressurise the float bowl to prevent the boost pressure stopping fuel delivery to the needle.

Sadly there were no blow-through 2" SU's as standard as far as I am aware.

Chris.

bones · Post by **bones** » Mon Sep 21, 2009 2:43 pm

i think suck through is easier for me, as for the inlet manifold, ive got a edelbrock could i make up a box to go on it , and if i use twin intercoolers i would only need 1 tube coming out of it, or are 2 better, as ive said before i know nothing about turbos, as youve already guessed

rich

topcatcustom · Post by **topcatcustom** » Mon Sep 21, 2009 3:02 pm

I'd say 1 bigger intercooler is better than 2 small ones, you have half the amount of pipe work that does no cooling (just increasing lag) then, but itwould be hard to make each sides pipework the same length. I'd also have thought the inlet manifold is not as crucial as with a NA engine, so you could use the eddy or anything else. Is this for your RV8 or SBF Rich?

chodjinn · Post by **chodjinn** » Mon Sep 21, 2009 3:14 pm

can anyone give me/Rich an idea what my twin turbo parts are worth? :

Twin SU 2" with janspeed mounts for T3 size turbos
throttle linkage
chromed plated cross-over pipes
SU inlet manifold ported (for stage 3 heads)
And a Janpseed oil breather kit I think?

Basically the full Janspeed twin turbo conversion without turbos/manifolds?

chodjinn · Post by **chodjinn** » Mon Sep 21, 2009 3:15 pm

but if you use suck through you can't use an intercooler (not that you need on for low boost turbo set ups using suck-thru).

bones · Post by **bones** » Mon Sep 21, 2009 3:50 pm

so intercooler only with a blow through, if no intercooler is used then the boost will have to stay low, and what bhp would it be without an intercooler on a 4.6 rover lump, or is it more effort than its worth bhp wise??

rich

chodjinn · Post by **chodjinn** » Mon Sep 21, 2009 3:54 pm

bones wrote:so intercooler only with a blow through, if no intercooler is used then the boost will have to stay low, and what bhp would it be without an intercooler on a 4.6 rover lump, or is it more effort than its worth bhp wise?? rich

Yes on the intercooler front.

Don't really know for sure, but I think the Janspeed kits ran at about 5-6psi without intercooling and produced crica 250bhp on the old 3.5 lumps.

You could get away with higher boost by using comp gaskets and low comp pistons. I know stevieturbo ran a 4.6 twin turbo lump, running about 15psi and almost 500bhp (standard internals) - but his was intercooled.