The ls1 project is killiing me and to be ohnest have got bored with the number of tedious things that must be done. I have another 250rwkw zed to daily drive. I am going to start building a engine on the side VG30DETT this time. It will have forged pistons and rods using acl bearings. the KKR is similar to the 3071 but has a samller 0.56 A/R for quick response. Just looking for opinions on bolting these to the side of a vg30dett. looking for more drag - highway performance so all in the top end. was going to use these adapters as it will adapt but also space the housing. http://cgi.ebay.com.au/T25-T3-Adapt...=AU_Car_Parts_Accessories&hash=item2303a0285f Opinions?
If you planning on using this adapter with the stock exhaust manifold config. the turbos will sit too low ... 1: the oil won't drain into the sump 2: will most likely foul the steering ... you need turbos with the T2 flanged housings or a custom exhaust manifold to suit T3 and keep the turbos positioned high enough to allow the oil to drain into the sump.
Oh yeah forgot about that may have to be a cut and weld job? just not sure how big the compressor housing is as it may foul against the manifold
0.56 A/R that is WAY to small minimum go for a 64ar.. the 3071 is a big turbo aswell your just going 2 choke it with such a small exhaust housing .. create extra heat and loose efficiency = lag
Yeah fair enough i was also considering these hypergear atr28's: Profile G2 .64 / .86: 450HP $950 Profile G3 .64 / .86: 480HP $1100 Aiming for big boost to test out some conrods and pistons.
The smaller housing would reduce lag. It would increase heat, increasing the pressure differential, increasing turbine rpm sooner, reducing lag. The greatly increased pressure prior to the turbine would restrict flow at higher rpms, reducing flow. The top end power would be greatly reduced by doing this.
agree with whitenight if you are aiming at lots of top end power the you will have lag, low end power and no lag go for the smaller exhaust ar turbo. Its a compromise I had HKS 2540 turbo lots of lag low down but heaps of top end power. Lot of people did not like this turbo, but I must say travelling at 100km/h and putting your foot down it certaining changed to very illegal vv rapidly. frightenly quick. That was at 18psi. maybe this type of turbo is what you are looking for
Yup ... I'd be sticking with the 0.56 or possibly smaller if going with the T3 frame. Still reckon you won't get them in OK using that adapter. The Hypergear Turbos look like a good option either would work, the .86's won't see max boost until after 5-5.5k though but really good top end. Personally with big horse power having the boost coming later is a good thing ... stops you wagging your tail every time you sep on the gas.
p.s ... If you are going to use the std. exhaust manifolds you may not get any of those turbos to work for you ...
well now im thinking more allong the lines of the hypergear 480hp .64 as it is still a t25 and he has a much better rep then kkr. for any serious fabrication i will be tacking it myself with the mig and then taking the whole thing down to a favourite fabricator to get it tig welded. For manifolds i was going to go with AMS? The whole idea is to put pressure on the conrods and pistons. Kinda like a proving ground for them.......26-30psi should do that? Got 800cc injectors coming from a guy already installed in fuel rail. twin walbros.. Opinions?
