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Old 04-16-2008, 04:09 PM   #1
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Default question on running a garrett TC4305

hey guys i need your opinion this ..

ok, im finishing my new built :

b18c5(itr) block gsr head
eagle h-beam rods
wiseco pistons(8:9-1)81mm
stock crank
golden eagle block guard
450cc
log manifold
3"dp
blox imf
etc...
on crome
ok now my question..

im using a garrett (TC4305 turbo) The compressor side has a 58mm wheel, 70 trim, .70 A/R, the exhaust side is 57mm wheel, 76 trim and a .82 A/R

http://i130.photobucket.com/al...5.jpg

if i change the exhaust side to a .48 a/r and wheel ,would it restrict me on the top end ???
it just seams that the .82 is too big

power goals at least 350whp and up @15psi???? don't know

what do you guys think?


Modified by Ekb18c5_BR at 5:28 PM 4/16/2008
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Old 04-16-2008, 04:12 PM   #2
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With a nice engine build like the one you listed, i would get something else for the turbo. If i were you, i'd look into either a 57 trim, SC34 or GT3255e. Also, your injectors are too small for your goals. A set of 550s might get you there, but i'd opt for a set of 720cc injectors
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Old 04-16-2008, 04:22 PM   #3
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Default Re: (Schister66)

thanks for the advice bro..
but i forgot to mention one think i ran out of money haha..
it was so post to be a budget built , so im stuck with this turbo for now ....

so you do you think??
change the housing??
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Old 04-16-2008, 04:33 PM   #4
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Default Re: (Ekb18c5_BR)

I agree with changing out the turbo. I'd never even heard of that model, which tells me it's REALLY old.

Save up and pick up a good GT series turbo. IF you can't wait that long, a precision SC turbo would work as well.
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Old 04-16-2008, 04:38 PM   #5
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i agree you can find t3t4 turbos in many sizes on here for cheap new they are only in the $500 and they will all get you to your goal and some
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Old 04-16-2008, 04:39 PM   #6
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Quote:
Originally Posted by chimmike
I agree with changing out the turbo. I'd never even heard of that model, which tells me it's REALLY old.

Save up and pick up a good GT series turbo. IF you can't wait that long, a precision SC turbo would work as well.
If he doesn't have the money for ANYTHING else, i dont think a GT series is in the budget I think you need to read before posting things

Also, for his power goals, there's really no reason to run a GT-R series unless its the GT28r. If anything, a used Garrett would do wonders for your setup and still not cost a ton.
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Old 04-16-2008, 04:46 PM   #7
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Default Re: (chimmike)

i know what you mean man ...

the turbo came out of a 7.3 L power-stroke (garrett international),is actually a t4 on compressor side, t3 on turbine side.


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Old 04-16-2008, 04:49 PM   #8
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Default Re: (Schister66)

exactly

now can some one answer my question please....??????


Modified by Ekb18c5_BR at 5:56 PM 4/16/2008
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Old 04-16-2008, 05:26 PM   #9
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Default Re: (Ekb18c5_BR)

oh the other question i have is that when i spoke to the guy wo sold me the pistons ,he told me the if i ran the head gasket that i have (cometic .072 )would put me to 8:9:1 cr. but i think that's using the stock with .030 .

does anybody know with a .072 what cr it would put me on????

thanks in advance..
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Old 04-16-2008, 05:47 PM   #10
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If you search "Honda compression calculator" on Google, you can find a few really good ones that will let you input the headgasket thickness along with your piston, head and block combo to determine your static compression
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Old 04-16-2008, 06:30 PM   #11
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Default Re: (Schister66)

thanks bro...

what about the exhaust housing question???

.82 or 48???

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Old 04-17-2008, 03:47 AM   #12
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anybody????
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