hello all i just had my car tunned today and just wondering if you think somthing is wrong or just because my build......the car pulls and drive ok until about 5k it starts building boost then its moves very fast.....pulls hard all the way till 9k..do you think its my build, turbo, or trans maybe?? ..list

B16a
balanced crank
eagle rods
acl rod bearings
weisco 9:1 pistons
Oem headgasket
Arp headstuds

B16a head
PNP
Manley 1mm oversized valves
skunk 2 spring and retainers
gsr cams
skunk2 intake manifold

fuel
rc750cc
aem fuel rail
walbro 255

LS trans
lsd
act 9lb flywheel
stage 3 pressure plate
6 puck clutch

turbo
garrett t3/t4 57.trim
tial 38mm wastegate
turbo xs bov
vibrant intercooler..

any advice is appriciated..thanks

 

sounds like a honda

 

Usually smaller displacement motors take longer to spool turbos.

 

Thats normal for a honda because of its small displacement. I get full boost at 5500rpm all the way to 9500rpm, thats on a 40r, but very laggy.

 

why are you running a LS trans?

 

big turbo. small displacement motor. lots of lag. Get a much smaller turbo if you want to boost much sooner.

 

also, if you're comparing your current motor to maybe when it was stock n boosted. it'll feel different since theres a huge compression difference from a stock b16a to a 9:1 b16

-Zol

 

looks like a nice setup too...any pics?

 

lol...what did you expect; full spool by 3k .

 

would mine take that long to spool too?

B16A2
Stock internals
cosmetic head gasket
msd 6al
blaster coil
aebs intake manifold

garrett T3/To4e .50 trim
neukin ramhorn
neukin 3in. downpipe

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cameron4776 &raquo;</TD></TR><TR><TD CLASS="quote">would mine take that long to spool too?

B16A2
Stock internals
cosmetic head gasket
msd 6al
blaster coil
aebs intake manifold

garrett T3/To4e .50 trim
neukin ramhorn
neukin 3in. downpipe</TD></TR></TABLE>

not as long..somewhere in the 4k-5k range more than likely

 

Like others have said, low comp. b16 is your problem. And I assume you have a full 3" exhaust? If you have a cat or something, remove it and run a straight pipe, it'll help a bit (if you're that worried)

 

whats the compressor and turbine size. hopefully not any bigger than .63?
i also agree with lower compression factor, the dude with the stock b16 is going to spool a bit faster because of higher compression which yeilds high pressure within the cylinders. also what type of manifold are you running?

 

seems about rite. its the low comp b16. you can look around for a bullseye 58 ar turbine housing that should help.

 

i never ran the car with stock b16 internals..i ran it with a ls-t.......im running a 63.hot side...i just wanted to make sure this was normal...its a fun ride though once boost hits tires are spining through 3rd and pulling hard all the way till 9k

 

I am planning to build the internals in a year. Should i buy a different block? OR JUST BORE MINE OUT TO A 1.8? I plan on sleeving and want to be around 30 psi

 

Just because it has VT@K doesn't mean it will spool any faster - that really depends on manifold design, the TURBINE, and engine displacement. A SOHC won't spool it much slower at all, either.

If spool really was what interested you, you should have gone with an LS/VTEC. Same price, 15% more displacement/faster spool, and there are countless 400+ stock-sleeve LS blocks out there. If it was me, I'd have left the head alone, since thats something that will upgraded, not outright changed like a block.


To the guy above: Get a different block, don't waste your time building a b16 block, let alone going with an 84mm B16.

 

don't worry about the compression. it has nothing to do with the spool of your turbo. you have lost maybe at the most 10hp by lowering your compression by 1 point. even if you were at 7:1 it still wouldn't affect spool. your displacement will affect the spool time. compression will determine how much throttle response and power you'll make off boost.

 

93
THANK YOU! Lower compression might actually HELP spool quicker if the egt's elevate.
93 93/93

 

its been tested and compression has very little to do with spool time. there have also been back to back testing done on the same motor and same turbo set up. the only difference was the compression went from 10:1 to 9:1. the only thing that happened was that it lost abt 10hp across the whole powerband. spool time stayed the same as well as the boost was the same. also egt is related to your A/F so high egt's are no good. unless ofcourse your using anti-lag then your going to get high egt's.

 

so is the car hitting full boost at 5k or not starting to boost until then?

+1 on you needing to get rid of the ls tranny. That must suck on a b16.

 

1.6L and the combination of an LS trans does'nt really help either but 5K is kinda late IMO... with a small t3 .57 trim turbo... my car started to build boost at about 3500 and i was at full boost by 5000 right before VTEC (5600)... I had a straight t3 super 60 DBB turbo... And now that i think about it thats possiblt why i spooled a bit faster than yours... HEHE

 

thanks for the advice..i used the ls trans because its going to go to the track alot and many guys on H-T told me to use the ls better gears...

For the spool i build about 2psi until vtec hits then its building 14psi by 5500 pulls hard all the way to 9k