kevino002

has anyone run the big a bore on a street car? just wondering I saw in the all motor forum that people had problems with head gaskets sealing? any info would help. btw mine is a darton sleeved 86mm gsr block.

wantboost

iTrader: (2)

i wouldnt for fi on anything over an 84.5mm bore. to liitle material left on the slleves, yes even if it s sleeved

kevino002

there seems to be alot of materail left on the sleeve, darton garentees the sleeves will hold 30+ psi.

kevino002

_entropy

We tried 85.5 on a friends B16. Didn't hold HG's worth crap, and it started to see blowby not long after we got it running, I think the cylinders became out of round. I would sell the block and start fresh, or have it resleeved.

T4eg

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Napoleon Dynamite &raquo;</TD></TR><TR><TD CLASS="quote"> I would sell the block and start fresh, or have it resleeved.</TD></TR></TABLE>

I agree the biggest we run turbo motors are 84.5mm.

Chris

kevino002

Thats not what I wanted to hear. lol
I think that I will try and see what happens, it I have problems then I will just start over.

kevino002

for more info

Luke J

DO it and let us know how it works out.

kevino002

I will..

asubennett

When you do it, have the machine shop use a torque plate to do the hone. It will keep the cylidners more true. - A good guy on this board gave me that very helpful tip. There are a few guys in the all motor forum running 87mm bore on a B Series.. Just make very sure both surfaces are flat as possible.

B19 coupe also had luck with indian head gasket sealer. I am anxious to here out it goes.

My 86mm motor shoul dbe done tommorrow night.

kevino002

The block is at the machine shop as we speak should be done friday. I will let you all know how it goes.

PIFFSTAR

my block is bored out at 85.5mm with dart MID sleeves i'm currently in the break in period, rev limiter set at 5000rpm 5pds of boost i put about 3000k on the motor since it was built.... just waiting on some $$$ to go tune but, going to play it safe keeping the boost at 10pds when i tune..but i'm making plans to build another block tho. i just have a slight feeling that block is going to go PINNNGGGGGG!!!!!!!!!!!!

kevino002

well I guess we will see, eveyone at the shop says that it will be fine that I am just worring about it to much.

asubennett

I agree. I think a lot of people shy away from 86mm becasue they are told it is impossible.

I too was scared in the beginning because of what I heard. The only con is that you at your limit so if something does break it doesn't leave much room for correcting it. I would not be afraid to boost like on the 86 just as you would on a 85 or an 84. If it blows the gasket then dial back the boost.

kevino002

see thats what I wanted to hear, thanks for the support asubennett.

asubennett

Best of luck to you. Rememebr that flat surfaces are your freind. take some material off the deck of the block if you have to.

kevino002

kevino002

well I finally got the car on the street. I took it to the dyno and found out that I need to replace the coil and one of the spark plug wires was bad so I just got a MSD 6Al and some MSD plugs. I went back to the dyno about a week later and was only able make one pass, the injector on #4 cyle. was not working, so I make just under 300whp at 6-8psi with only 3 cylenders. I am going to replace the injectors this week and get it back on the dyno. I have put about 500 miles on it boosting 6-8psi before the injector went. will update soon.

kevino002

Have been running the motor for about 6 months on 8-9psi and have had no problems with the HG, going to the dyno soon to tune for higher psi and more power, will keep you updated.

Kelly.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kevino002 &raquo;</TD></TR><TR><TD CLASS="quote"> so I make just under 300whp at 6-8psi with only 3 cylenders.</TD></TR></TABLE>

who in CO is tuning it?

you should contact servion (he is on here) , he is the man iin CO for tuning hondas
tell him Kelly sent ya

kevino002

He is tunning my car... Has been since I switched from Hondata to Neptune.

Kelly.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kevino002 &raquo;</TD></TR><TR><TD CLASS="quote">He is tunning my car... Has been since I switched from Hondata to Neptune.</TD></TR></TABLE>