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Turbo Build/Rebuild. I need turbo experts help!! :)
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Last edited by Jdm94Coupe; 04-17-2010 at 02:01 PM.
1. Depends on each individual manufacturer. Why not try a small Borg Warner or Bullseye turbo? We have had GREAT luck with them. S256 or slightly smaller would be a good choice if you are looking to do this on pump gas. The extended tip turbos spool VERY quickly. Billet wheels seem to be the new big thing. Not sure how much faster they really spool as it seems to spool similar just make a bit more power. Usually they are a slightly larger wheel.
2. Later spool sometimes, but higher hp
3. The is a ratio between the inducer and exducer.
Honestly if you have the bottom end to handle it, go bigger. Lag is only there for a second in first gear. From there, it's just a downshift away. And put a filter on that thing. You are just sand blasting your compressor wheel!
---Mike
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Last edited by Jdm94Coupe; 05-15-2010 at 12:00 PM.
T04E 50 trim with the smallest turbine housing you can find....maybe a .55 ar or .63. I would hate to cheap out on a turbo build though, lol. You have a compressor wheel come apart and spit metal fragments into the intake and you can kiss the motor goodbye! I would look to Garrett or Bullseye for a turbo. Honestly $900-1000 is pretty cheap for a good quality turbo! You might be able to get a Garrett for $550-600. But then you are only $300 or so away from a S256 at that point.
---Mike
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Last edited by Jdm94Coupe; 05-15-2010 at 12:01 PM.
Faster spool up, more power. The S256 is a little bigger than a 30R. Compressor and turbine wheel technology is new compared to 30 year old Garrett wheels. Disk bearing instead of ball bearing though, so rebuilds are much cheaper. Check out http://www.bullseyepower.com/racing.asp I have done 3 kits with these so far with great results!
Or you could rebuild, but my guess is that wheel may be trashed from running it without a filter. It will slowly sand blast the wheel from road grit, dust, etc.
---Mike
If all you want is 300 whp, and something that spools fast, i would do a larger t3 turbo, or a small t3/t4. No need for 30r+. (or even go with a 2871r, or disco potato (t2 flanges)
The EMPIRE
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Last edited by Jdm94Coupe; 05-15-2010 at 12:01 PM.
My bad, thought by the title "turbo build/rebuild" you were considering just rebuilding the turbo. The 2871 would be a good turbo. As would a S249. You could also look into getting a VF30, VF34, VF39 or VF43 of of a Subaru. They are pretty tough turbos and good for 300 if you push them. The VF34 is a ball bearing turbo. You would have to redo your piping, but you can pick them up almost brand new for around $400.
Another turbo that would be great would be a EvoIII 16 G. Fast spool and good top end potential. I think the max out at around 320 on pump gas. Then there is the new HTA68 billet wheel from forced performance. Might spool a little slow on that motor though.
---Mike
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Last edited by Jdm94Coupe; 05-15-2010 at 12:02 PM.
Originally Posted by crashtke
the big 16g is good up to 350hp and is at full boost about 3600-3800rpm on my single
Yup, it is a nice little turbo. You can also push the boost pretty dang high on it too and stay in its efficiency range.
---Mike
i think 22psi it the limits of its efficiency range.
That depends actually...you can take it up quite a bit higher in the low end and then taper it towards redline if you have the right boost controller.
---Mike
interesting. I was just talking about just having it set at a single psi tho haha.
tuning secretsYou want that mid range PUNCH then ya gotta use the turbo to the best that it can be used. There are other little tricks too.
---Mike
^ u work/own a shop or something..... jw... updates coming from me tomorrow as well! with more pics
I tune cars and have helped designed some turbo kits. My partner has a shop and does motor builds, transmission builds, port and polish work, etc.
---Mike
does he do bottom ends? how much motor work can he do IN HOUSE?
He has the machining done by some guy that does a bunch of NHRA cars. We just don't have the cash for $250,000 machine shop equipment. And the guy that does the machining has been doing it for 20 years. The rest he does it all in house. All the assembly and port and polish work. We do all our fabrication work in house as well.
We are hoping to start on a 600+ hp S2000 build here in the next month or so. We have to finish up a couple Subarus first. I am shooting for 600+ on my suby as well.
---Mike
what side of town r u on? sounds like u dont have time 4 my shortblock, lol........ nvm then.... updates 2morrow....
Andy is over in Kennesaw. I am sure it depends on what you need done. He spends around 30 hours per head on porting and polishing and can only do around 3-4 hours at a time, lol. Cramping, back aches, etc. Sucks getting old. But short blocks don't take nearly as much time.
---Mike
how much would he charge to port/polish a d16z6 head
Don't know will have to call. I'll let you know.
---Mike
preciate it..... didnt have time to work on the hatch. so next friday when im off i will get 2 work and add pics.....
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Last edited by Jdm94Coupe; 04-17-2010 at 02:01 PM.
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