Snail Tuning

ok i just picked up an HKS manifold and T25 tubro off a silvia.

not sure if its a T25 or T28 but the A/R is .80

my last t3 was only 42/48. is this thing ganna create alot of lag?

im rebuilding my z6 to handle 18-20psi. so this tubro will be killer for my top end and stock i believe its set at 12psi which is perfect for daily use. and then just add an electronic controller to run 18 at the track.

so has anyone run this turbo on a z6? if so what are your experiances. need some input.

thanks

Snail Tuning

no one has used this setup yet?

Snail Tuning

hmm no one uses HKS or Garret T25 turbo's. i gess ill be a first.

bump it anyways.

Snail Tuning

i know spool times will differ from car to car. but should i plane my head to get my comp raised alittle. it will be the stock 9:1:1 im considering getting the head shaved and rasing the comp to 9:5:1. also i will hopefully be running a 3inch dp to 3inch exhaust.

just looking for personal experiances with this turbo on a Dseries.

as stated before cold side has an A/R or .80

Snail Tuning

bump.

also anyone know where i can get the gasket for between the turbo and manifold, and i need one for between my turbo and the dp. thanks

T-RO

I thought the Silvia had a T28? I've got a DSM t25 and its only 40 something A/R

Buraku

a local dude blew up his 18g and threw a niisan t25 on it. he likes it, but hes only running 7 lbs on a b16

out there

from 18g to t25? eww... btw, just get a dual-stage mbc from someplace like http://www.dejontool.com if you want to run two different boost levels

Snail Tuning

the R33 and R34 have the T28 the R32 and earlyer have the T25.

this is not a DSM or mistu turbo its a JDM Garrett turbo bigger than a mistu T25.

also a manual boost controller will work. i can set it at 18psi and then pull it when im not at the track. stock i believe is set at 12psi. perfect for daily use.

JalopySiR

O.K. here goes, I've actually done this, on a B-series. First off, it's a T25. You can tell because of the A/R of the compressor side. .80 means it is using a T25 compressor. If it had a .60, it would be a T3 compressor, making the turbo a T28 (T25 hot+T25 CHRA+T3 cold=T28). Anyway, this turbo will work on a 1.6 d series. It will not be laggy, as compressor a/r has almost nothing to do with spool. The hot side is going to be .63 or so, correct? It will spool reasonably quickly, and it might flow enough up top. I would go bigger, but since you already have it... anyway, you're real problems will begin surfacing as you get deeper into the project. I doubt it is set to 12psi, more likely somewhere between 6 and 9 psi. Feel free to IM me as issues arise. have you mated the turbo to the manifold yet? You can get gaskets and flanges from SR20performance.com.

Snail Tuning

what do u mean problems with the surfacing?

only problems im seeing are going to be shaving the block down in the front. im ganna have to take quit a bit off in a few places to get clearance for the turbo.

no big deal tho. also i think this turbo will work great. its bigger than my ihi and that pulled hard. this is significantly bigger so i shoudl have some great top end. i mean it pulls hard on a dohc 2.2lt so it should scream on my little sohc 1.6lt

ill post some pics soon.

boostn420

I put a home made turbo kit in my car 3 weeks ago. I used a t25, I didnt pay attention to the a/r's because it was free so it really didnt matter. I really dont see why you would need to remove material from the block, mine fits with tons of room.

Snail Tuning

im 99% sure your T25 is a mistubishi Eclipes or Eagle Talon turbo. meaning its not a JDM Garrett T25 turbo. so its a totaly differnt turbo and it will fit different. im ganna post pics of the stuff i have so far. also im ganna post some pics of a few flanges i have found and i wanna get some reveiws on them.

Snail Tuning

This is the exhaust flange i am considering. any comments? im not sure if i like it because i was planning on running 3" exhaust and dp. but this looks alittle small and possably to restrictive. any comments are welcome.

12mm thick 304 stainless steel, CNC machined turbine housing outlet flange for Nissan style T25 turbocharger.

JalopySiR

I said "Problems will begin surfacing" meaning more problems will come up as you progress. How are you going to route the charge piping? Have you researched the oil inlet outlet fitting sizes, water jacket fitting sizes? I'm sure it will work, but it doesn't pull HARD on an SR20, which is 2.0, not 2.2. This is going on a D16Z6, which makes around 126hp, the NA SR20 makes around 140, meaning they flow similar numbers. That turbo is from a red top SR20, it's fairly small, but I think it will work out quite nicely for you. Also, the turbine discharge flange is the one I used, but I got mine from TEC. The hole diameter is 2.25". you'll have to have the pipe expanded downstream. Anyway, like I said, I've done it. Lemme know when you have questions.

Snail Tuning

on me i can't read. well maybe its cause im tired.

anyway, after looking at that flange 2 ideas came to mind.

1. get a 3" stainless 90 degree elbo and flatten one end out alittle to make it an oval and grind some off the flange to flow like a 3" oval pipe instead of 2.25 circle.

2. buy 2.25 stainless elbo, and buy a small 1" or 3/4" elbow, drill hole where the wastegate opens and run elbow to joint where the 2.25 expands to 3". think these may work? also will this manifold allow me to kep my A/C depending on how i make my dp?

im asking because i will be running a minimum of 12psi daily. and ive read the SR20det is usualy stock 12psi. but ill find out when i get this up and running, the wastgate does feel alot stiffer than my ihi turbo and it was set at 7.5psi.

also i orderd an oil drain flage off ebay for this turbo, ive been considering ideas for the oil inlet and i think im ganna run it through one of the runners on the manifold and just cover it with a heat sheald to prevent oil baking and melting the rubber stainless line.

JalopySiR

Idea 1, will not work, as there is not enough room on the flange face itself for the nuts, washers, and the bead you will need to weld on the pipe, and the pipe. The seperate wastegate line idea might work. I did it on mine, just makes wrenching a bit more difficult. Keeping A/C will all depend on how you pipe your DP. Is this going on an "EG" if so, you'll probably be all set. I ran the oil line between the runners, it seemed to work fine. The inlet fitting you need is a 7/16-24 i.f. brake adapter. I'm fairly certain about the 6-9psi wastegate setting, but if you want to run 18ish psi, this is really not the one for the job, it will become ineffiecient LONG before that. Check out a compressor map, if you can find one...

Snail Tuning

this would be idea 2. i was going to buy one of these but the design is for a silvia so it doesn't hug the turbo enough. so their would be no way to keep the a/c.

this would be style 1. im leaning more twards style 1. so when i get the flange ill just work with it and see what i can come up with.



Modified by bmcc72 at 10:35 AM 12/19/2003

JalopySiR

The first pics are of the ebay turbine discharges, and the second is a Trust unit. If you could get one for a good price, give it a try. Just remember that The Sr20 is a North-south engine and the turbo is mounted differently. When I did mine, it was in a CRX, so there was no room, but if this is going into a 5th gen civic, you should be all set, there is alot of room there. Try doing a search for topics created by JalopySiR, T25, T-25, T28, T-28, and Internal Wastegate. Do alot of homework. T25s/T28s have WAY less support and backup knowledge out there. Good luck.