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View Full Version : B18C turbo exhaust size of rear housing??


lookingforboost
24-07-2009, 12:53 PM
hey guys anyone know whats turbo/ rear housing size they are running in a B18C and what RPM they are making boost by?

:p

Hope that makes sense
VTi_b0i
24-07-2009, 12:55 PM
im using a garrett GT28RS with a .86 rear housing, alotta people say that would lag but it doesnt feel that way to me...IF i could do it again id get a slightly bigger turbo tho...I just wana see the difference...It starts boosting about 2.5k and id say its on full just before 4k
joe.teg
24-07-2009, 01:18 PM
the beuty with hondas is their ability to rev freely :P
Limbo
24-07-2009, 02:56 PM
all this depends on which turbo
Limbo
24-07-2009, 02:57 PM
VTI_boi - PM if u wanna trade i got a GT2871R with a .86 rear if your interested in trading

Starts spooling at about 2.5krpm full boost at 4.7krpm.

Doesn't seem to lag on mine but i'd like a slightly earlier full boost
ZeForce
24-07-2009, 03:02 PM
Im running a tiny .48 T3 exhaust housing which is extremely responsive but is choking my top end power a fair bit. Good fun for a daily driver though. Probably better off with a .63 T3 or .86 T25 especially if you have a ball bearing turbo.
VTi_b0i
24-07-2009, 03:05 PM
VTI_boi - PM if u wanna trade i got a GT2871R with a .86 rear if your interested in trading

Starts spooling at about 2.5krpm full boost at 4.7krpm.

Doesn't seem to lag on mine but i'd like a slightly earlier full boost

how many K's on urs dude? mines nearly new lol and if i did go the bigger turbo, id go a smaller rear housing to compensate lol
Limbo
25-07-2009, 08:28 PM
dunno hwo many ks but no shaft play, and boosting at 10PSI is like nothing for the 2871r
lookingforboost
28-07-2009, 12:09 PM
So you guys are all runing T2 flanged setups ?

i am thinkin of a T3 GT3071R but just not sure if i should go the .63 .82 or .86 i was going to go the .63 as i want a fast boost response but was worried that it would get chocked up at top but i dont know if to .82 at this stage
Lukezen27
28-07-2009, 04:36 PM
So you guys are all runing T2 flanged setups ?

i am thinkin of a T3 GT3071R but just not sure if i should go the .63 .82 or .86 i was going to go the .63 as i want a fast boost response but was worried that it would get chocked up at top but i dont know if to .82 at this stage

I'm running a GT2871R with a 0.86 Rear Ryan :) full boost at 4K RPMs

Have you upgraded from your SOHC?

I'd go a GT30 with a 0.63 rear on a B18
ZeForce
28-07-2009, 05:15 PM
I'd go a GT30 with a 0.63 rear on a B18

yeah, GT3071R with .63 hotside would be good for 250-300kw before it would run out of puff
FastFwd
28-07-2009, 05:28 PM
Im Running Gt2871R with 0.86 same as Luke

Boost starts around 2500 and full at around 3800 on 10psi. I have a different setup to some of the other guys tho. diff mani etc.
lookingforboost
28-07-2009, 06:52 PM
yep cool cool i think i will go with the .63 rear atm, caz i am going the anti surge front comp cover and external gate V band rear so i think it will be ok if its not enough then i'll change it later to the .82 see how we go first :)

Hmmmm luke well dont know at this stage anything could happen lol ;)