jevansio Posted June 5, 2008 Share Posted June 5, 2008 Hypothetically, would it be OK to replace the GT40 with the T51R with the rest of my spec remaining the same? I understand a new downpipe & midpipe will be in order. It's 4" / 2.5" compressor in / out which is the same. Will need that T4 to vband adapter for the manifold. I'm more concerned about things like fuelling being upto the job, will my available rev range Any reasons why this turbo is a bad choice over the GT4088R? Quote Link to comment Share on other sites More sharing options...
JamieP Posted June 5, 2008 Share Posted June 5, 2008 BB? will all be ok mate depending on how much boost you run, what size injectors do you have? Quote Link to comment Share on other sites More sharing options...
jevansio Posted June 5, 2008 Author Share Posted June 5, 2008 Yip BB, I guess I'd have it mapped no farther than 85% duty (whatever that works out in limiting the boost to), 880cc's Quote Link to comment Share on other sites More sharing options...
tooquicktostop Posted June 5, 2008 Share Posted June 5, 2008 I had several chats about going T51 when i decided to change the T04R, it was a tough choice because I am a sucker for big power figures, but I have been there too many times before with Skylines and ended up with a car that was no fun on the road, I think the T67 DBB has to be as big as you go for the street, unless you are looking for a drag queen of course Quote Link to comment Share on other sites More sharing options...
Kopite Posted June 5, 2008 Share Posted June 5, 2008 I knew it Quote Link to comment Share on other sites More sharing options...
Pig Posted June 5, 2008 Share Posted June 5, 2008 I thnk ash runs 8k. Is there any reason why you couldntrun up to 8k? Quote Link to comment Share on other sites More sharing options...
JamieP Posted June 5, 2008 Share Posted June 5, 2008 You will be fine with 880's its not going to spool as good as your 4088 but for a big turbo they aint bad. Michels turbo seems a good unit to me, ryan was telling me it spools better than the T51 bb. Quote Link to comment Share on other sites More sharing options...
SteveR Posted June 5, 2008 Share Posted June 5, 2008 Subscribed for when mine goes pop... Quote Link to comment Share on other sites More sharing options...
Muffleman Posted June 5, 2008 Share Posted June 5, 2008 Yeah thinking about the T51R spl for the R32. Quote Link to comment Share on other sites More sharing options...
jevansio Posted June 5, 2008 Author Share Posted June 5, 2008 I had several chats about going T51 when i decided to change the T04R, it was a tough choice because I am a sucker for big power figures, but I have been there too many times before with Skylines and ended up with a car that was no fun on the road, I think the T67 DBB has to be as big as you go for the street, unless you are looking for a drag queen of course It's def not going to be a drag queen. I'm going to get my arse to some events this summer & see how the GT4088R feels. I know bigger turbos are going to be worse on a track but I have this desire to see 200mph out of the Supra, & I don't think the GT40 is going to cut it. The T67 may have been a better initial choice, but it seems a bit pointless changing from the GT40 to the T67 as there's not that much it it. If I were to change I'd want a decent jump (the T51R Kai is a 71mm turbo???). Quote Link to comment Share on other sites More sharing options...
jevansio Posted June 5, 2008 Author Share Posted June 5, 2008 I knew it Lol, I did say hypothetically I thnk ash runs 8k. Is there any reason why you couldntrun up to 8k? I don't know, will have to ask Michel what it's capable of. You will be fine with 880's its not going to spool as good as your 4088 but for a big turbo they aint bad. Michels turbo seems a good unit to me, ryan was telling me it spools better than the T51 bb. Michels was another choice I was considering, his SP74DBB spools amazingly well. Subscribed for when mine goes pop... Yeah thinking about the T51R spl for the R32. The SPL is the big mother isn't it (76mm) with the Kai being 71mm (taken from Andy H ) Quote Link to comment Share on other sites More sharing options...
JamieP Posted June 5, 2008 Share Posted June 5, 2008 Id go for the 74dbb with a .81 ar:) Quote Link to comment Share on other sites More sharing options...
jevansio Posted June 5, 2008 Author Share Posted June 5, 2008 Id go for the 74dbb with a .81 ar:) It would def be a toss up between the T51R Kai & the 74DBB, as long as I can just plop the turbo on & my existing spec can make good use of it, if I had to redo half of my spec just because the turbo is too big I'd rather just plump for a T67 if... when my GT4088R is taken by the magical blade nibbling mouse Quote Link to comment Share on other sites More sharing options...
JamieP Posted June 5, 2008 Share Posted June 5, 2008 Only thing on your spec id consider upgrading is the fmic. Quote Link to comment Share on other sites More sharing options...
bolarbag Posted June 5, 2008 Share Posted June 5, 2008 Doesnt the T51R come with different exh housings? Quote Link to comment Share on other sites More sharing options...
jevansio Posted June 5, 2008 Author Share Posted June 5, 2008 Only thing on your spec id consider upgrading is the fmic. Keeping my eye's peels for a 3 Row core, may even have to buy a full setup, swap the core with mine & sell on. Quote Link to comment Share on other sites More sharing options...
jevansio Posted June 5, 2008 Author Share Posted June 5, 2008 Doesnt the T51R come with different exh housings? I don't think so, not sure though, everyone always refers to it as the T51R Kai and never mentions any size specific info Quote Link to comment Share on other sites More sharing options...
Homer Posted June 5, 2008 Share Posted June 5, 2008 Jay, it's a pretty big step up to the T51, have you seen Ryan's dyno comparison on the torque delivery? I've only been in one T71 supra and it felt much slower at sub 100mph, but obviously on full boost was an animal. It was a non-DBB version, but how much difference does that make on a large turbo like this? Quote Link to comment Share on other sites More sharing options...
Mike B Posted June 5, 2008 Share Posted June 5, 2008 slightly off topic.. did you get your old GT40 repaired or did you buy a new one? not having much joy on uk service for mine I ordered a T67DBB.. I heard the mouse is travelling south this weekend Quote Link to comment Share on other sites More sharing options...
jevansio Posted June 5, 2008 Author Share Posted June 5, 2008 Jay, it's a pretty big step up to the T51, have you seen Ryan's dyno comparison on the torque delivery? I've only been in one T71 supra and it felt much slower at sub 100mph, but obviously on full boost was an animal. It was a non-DBB version, but how much difference does that make on a large turbo like this? Yeah I know, it's going to be tough deciding how big to go, I've been in and up against Michels 74DBB & TBH I'd be quite happy with the way it performs. slightly off topic.. did you get your old GT40 repaired or did you buy a new one? not having much joy on uk service for mine I ordered a T67DBB.. I heard the mouse is travelling south this weekend I've been told it was unrepairable being a DBB housing, nobody wanted to touch it. I bought a brand new turbo. My gut feeling is even if a got a T67, within a year I'd want something bigger, but I guess it's always the way. Yeah no doubt it won't be chipping in for petrol costs either Quote Link to comment Share on other sites More sharing options...
tooquicktostop Posted June 5, 2008 Share Posted June 5, 2008 Just found my old T04Z graphs, could not face the cost of buying this kit again but it was a close call, this was a great Turbo, hope the T67 comes close http://img2.putfile.com/thumb/6/15617212652.jpg http://img2.putfile.com/thumb/6/15617212559.jpg This was on a stroker RB26 engine with JUN internals Quote Link to comment Share on other sites More sharing options...
AshBhp Posted June 5, 2008 Share Posted June 5, 2008 I've been in and up against Michels 74DBB & TBH I'd be quite happy with the way it performs. I was next to Michels a few time at Marham, we did some 3rd gear pulls side by side as well. I was running 1.2bar guess who had the edge ? Quote Link to comment Share on other sites More sharing options...
Jurgen-Jm-Imports Posted June 5, 2008 Share Posted June 5, 2008 I was next to Michels a few time at Marham, we did some 3rd gear pulls side by side as well. I was running 1.2bar guess who had the edge ? you Quote Link to comment Share on other sites More sharing options...
Ryan.G Posted June 5, 2008 Share Posted June 5, 2008 (edited) T51R Kai for me Jay if i had your setup Ash's and Uk-rich's pick up so nicely and the way the power and torque is delivered helps with traction in the lower gears. Plus the noise of them is just pure bliss. A dream of mine would be a 3.4 with a T51 Kai Edited June 5, 2008 by Ryan.G (see edit history) Quote Link to comment Share on other sites More sharing options...
tooquicktostop Posted June 5, 2008 Share Posted June 5, 2008 T51R Kai for me Jay. Ash's and Uk-rich's pick up so nicely and the way the power and torque is delivered helps with traction in the lower gears. Plus the noise of them is just pure bliss. A dream of mine would be a 3.4 with a T51 Kai Hope you get time to put the base map on mine tomorrow at Phoenix Ryan ? Quote Link to comment Share on other sites More sharing options...
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