i have a built b16 with a mini-me manifold. it was 81mm, 9:1 pistons. my .82 gt35r spooled very late (6-6.5k rpm). when i did a compression test the number were super low (120's). so i rebuilt the motor and now have 84mm 9.7:1 pistons. im hoping this will help my late spool problems. but how much of a diffrence will it make if switched to .63 housing? is it worth the money?

 

has anyone switched between the two, or experinced bothe sizes

 

i run the 82 on my 1.8l and it spools geat... i hit full 23 psi @ 5600ish

 

what manifold and exhaust?

 

I was told there would be no more then a 500rpm difference. so I went with the 10cm2 (about .73)

 

i have a love fab mini-me manifold and a full 3" exhaust. i just dont know if my motor has enough displacment to spool the turbo quickly enough.

 

If it spooled at 6500 with the 81mm motor it should be spooling about 500 RPM's quicker with the 84mm bore. I would probably swap to a .63

 

i was wondering the spool diffrence. i dont know if 500rpms is worth the $300 for a new housing. would the .82 housing be worth anyting if i were to sell it?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by downeyballz &raquo;</TD></TR><TR><TD CLASS="quote">i was wondering the spool diffrence. i dont know if 500rpms is worth the $300 for a new housing. would the .82 housing be worth anyting if i were to sell it?</TD></TR></TABLE>

A new housing shouldn't be 300 bucks, and you can try and trade with someone on here. I'm sure theres somebody with a .63 that wants to trade up to a .82.

 

the best price i could find was $300. the gt35r housings are like 2x compared to normal t3 housings. if you can find a better price let me know

 

bump

 

the 63 will hit about 30psi around 5300 rpms assuming you have a good exhaust manfiold and big exhaust.

deffinatly wouldnt get the 82 on a b16 unless you plan on turning 12k rpms

 

this is a street car so i dont think it will ever see 30psi, it will hardly ever see any race gas. also how much of a diffrence will changing the compression from 9:1 to 9.7:1

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by downeyballz &raquo;</TD></TR><TR><TD CLASS="quote">also how much of a diffrence will changing the compression from 9:1 to 9.7:1</TD></TR></TABLE>

it wont

 

i have a gt35re .63 .. I will trade for a bigger one. i wanted to go bigger but recieved the wrong turbo in the mail.

 

is yous 3" outlet, i also need to see it if will fit because i dont know if turbo you have is ball bearing

 

so compression doesnt make a diffrence in spool?

 

my turbo is ballbearing .. on the exaust side irt says .63

 

is it a 3" outlet, 4-bolt, t3? have any pics? i would be intrested in trading.
the onth thing that through me off was that you said you had a gt35rE

 

i am also in the market for a .63 4 bolt gt35r, let me know condition etc.

 

bump


cheapturbo.com sells them, but you have to call its not on there web site

 

dont take this the wrong way, but-
isnt a gt35r a little overkill on a d16? i didnt think thoes reved high enough or made enough power to get the most out a big turbo. how high (rpms) can a d16 go. and how much power are you making at your boost level

 

in theory a d16 could rev higher, it has less moving parts. a z6 rev limit is like 7600 stock i think, higher then an LS. I know people that rev there z6's to 9k all day long with no problems. so I wouldnt say revs are an issue, and hes making boost at around 5100 so it is deffinitally usable.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by downeyballz &raquo;</TD></TR><TR><TD CLASS="quote">so compression doesnt make a diffrence in spool?</TD></TR></TABLE>

nope

 

i though that d series motors were rev limited because of there longer stroke.
im just trying to learn a little more about d-series.

bump for more opnion on exhaust housing