b18bturbo

We almost had our motor installed last night till my finger got slized by the damn pulley.. but anyways has anyone run that large of bore sucessfully at around 15-20psi.

boosted hybrid

I have an 86mm all motor engine. The sleeves are pretty thin, I dunno about boost on a 85mm...

b18bturbo

GE says it can be done iwth there blocks i guess there is only one way to find out.

Vadian

I'll let you know in like 3 weeks. I was going 85mm but scratched up the walls a little by dropping a valve...I'm now at 85.5mm.. the sleeves are pretty darn thin..

b18bturbo

ill be running tommorw if my finger stops killing me 8 stiches last night

Vadian

Oh, sweet. Sorry bout your hand. Are you guys doing any special prep to the headgasket or anything? BTW, what headgasket are you guys going with? I went with a GE one.

dfoxengr

ive heard of 86x95 boosted at 25+ pSI

b18bturbo

we use the factory one bored out 81mm bored out by hand its the same thing tony1 from jotech showed us to do way back when

DaveF

let us know how it runs and holds up...hope to hear some good results

thejdmkid

I know Turboeg6 had a JG built b18c block way back bored to 85mm. Not sure what happen to is, I was gonna buy it but sided with non vtec. Just wanted to chime in.

TurboDANDEE

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b18bturbo &raquo;</TD></TR><TR><TD CLASS="quote">we use the factory one bored out 81mm bored out by hand its the same thing tony1 from jotech showed us to do way back when</TD></TR></TABLE>

tell us how it holds up, leaks or anything...

jinxproof99

i have seen 85mm last a whole season at over 20 lbs on a t4.

b18bturbo

it will be installed this week finger is geting better should have it running by sat hopefully.

Boostfed

My bore is now 85mm and it will be dynoed this weekend hopefully up to 28psi, I'll let you know how it holds up. Also Vince had mentioned that the sleeves have been tested with 85mm sleeves up to the 60psi test and he was nervous but it did it without any probs. Just what I read though, I will post my numbers when I get them.

accordfreak

so you guys are going 4mm over bore?

sorry i'm an accord guy i don't know the stock bore of the b series..

sweet

iTrader: (5)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by accordfreak &raquo;</TD></TR><TR><TD CLASS="quote">so you guys are going 4mm over bore?

sorry i'm an accord guy i don't know the stock bore of the b series..</TD></TR></TABLE>

yep, 85mm is a 4mm overbore.

i'm curious to see how the 85mm GE sleeves hold up under high boost, along with the OEM overbored HG.

anyone who does this let us know.

Boostfed

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sweet &raquo;</TD></TR><TR><TD CLASS="quote">

yep, 85mm is a 4mm overbore.

i'm curious to see how the 85mm GE sleeves hold up under high boost, along with the OEM overbored HG.

anyone who does this let us know. </TD></TR></TABLE>
UH me!

accordfreak

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Boostfed &raquo;</TD></TR><TR><TD CLASS="quote">
UH me!</TD></TR></TABLE>

hey boostfed... just wondering, did you enlarge the combustion chamber of the head to match the over sized bore of the block?

trbob16a

85mm shouldn't have any problem holding big boost. I went with 84.5mm just in case I destroy something I can still open it up a little more and salvage the sleeves.

Boostfed

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by trbob16a &raquo;</TD></TR><TR><TD CLASS="quote">85mm shouldn't have any problem holding big boost. I went with 84.5mm just in case I destroy something I can still open it up a little more and salvage the sleeves.</TD></TR></TABLE>
Yeah but if I had it do over again I would've started with 84mm then still would have 1-2 more overbores to go.

Vadian

Likewise...Hopefully mine will hold up and I'll be enjoying La La Torque Land..

SuperTeg95

Viren, I thought you guys would only running Darton. Oh well, newer technology takes over.

b18bturbo

we bought this cheap from boomslang here on ht he allready had it bored out 85mm so we said we might as well try it..

LEON

How many liters will 85mm be on a gsr? 2.1?

boosted hybrid

Depends on how you calculate the displacement. I do the standard displacement calculations and get 2050cc displacement. Others say that its right around 2000cc displacement. I am still unsure of how people argue what the displacement sizing of an engine is.