Quick question: anyone successfully used a sleeved 85mm block for FI making 400-500hp without constant head gasket problems?

Trying to decide if i need to sell my block or keep it before i buy the pistons.

This is a rebuild BTW after spinning a rod bearing so the car was 84.5mm boosted.

 

Let the all motor guys have that one man. It's getting pretty thin.

 

i remember reading an article on a guy with 85mm running 550 hp for about 2 years and its still going. it was some yellow type r from seattle go to google and type in 550hp type r and it should pop up for ya thing is ******* SICK!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mattcivic &raquo;</TD></TR><TR><TD CLASS="quote">i remember reading an article on a guy with 85mm running 550 hp for about 2 years and its still going. it was some yellow type r from seattle go to google and type in 550hp type r and it should pop up for ya thing is ******* SICK!</TD></TR></TABLE>

https://honda-tech.com/zerothread?id=986127

You mean that one? He worked on the car for 2 years, not that he drove the car for 2 years.

Arn't you glad you went 84.5mm bore for that 2 HP gain, now that you've toasted your motor and needed to rebuild? That's why I always say 83mm max to start with, but nobody listens

 

oh **** i thought that didnt sound right oh well its still a ****** BEAST

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boosted92 &raquo;</TD></TR><TR><TD CLASS="quote">https://honda-tech.com/zerothread?id=986127

You mean that one? He worked on the car for 2 years, not that he drove the car for 2 years.

Arn't you glad you went 84.5mm bore for that 2 HP gain, now that you've toasted your motor and needed to rebuild? That's why I always say 83mm max to start with, but nobody listens </TD></TR></TABLE>

I didn't buid the motor, thanks, ***.

 

when i waste my 84mm sleeved gsr im gunna just bore it to 85mm so i guess i will find out that happens. maybe i will just bore it to 86 and make it my new n/a block??? oh well good luck on the build

 

anyone else have any input on this? thx

 

85mm is fine

our race engine last year was 85mm - we made over 700 whp with it, ran it all season and it is still running strong - just pulled it out and put a fresh one in this year and the 85mm is sitting in the shop as a backup ready to go

James Innes

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GSC Motorsports &raquo;</TD></TR><TR><TD CLASS="quote">85mm is fine

our race engine last year was 85mm - we made over 700 whp with it, ran it all season and it is still running strong - just pulled it out and put a fresh one in this year and the 85mm is sitting in the shop as a backup ready to go

James Innes</TD></TR></TABLE>

Really appreciate the experience!

May i finish it off with what type of head gasket you were using and if you were oringed, step decked, or flat decked?

Thanks!!!

 

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

Really appreciate the experience!

May i finish it off with what type of head gasket you were using and if you were oringed, step decked, or flat decked?

Thanks!!! </TD></TR></TABLE>

I would like to know this also.

 

I'm in this same situation, I would like to know what headgasket you used aswell.

 

Golden Eagle 85mm Headgasket - they take a stock one and bore it to match the size of the cylinder - work excellent

our blocks are o-ringed as well

 

ooh, yeah that probably helps, I'm thinking a 85mm cometic

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GSC Motorsports &raquo;</TD></TR><TR><TD CLASS="quote">our blocks are o-ringed as well</TD></TR></TABLE>Can you post a pix of your 85mm o-rings? I didn't think there was enough room between the cylinders to do that successfully. We have run 85mm Benson blocks on 35lbs of boost with no problem in our race car but I think it would be way too much for a street motor.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by earl &raquo;</TD></TR><TR><TD CLASS="quote">Can you post a pix of your 85mm o-rings? I didn't think there was enough room between the cylinders to do that successfully. We have run 85mm Benson blocks on 35lbs of boost with no problem in our race car but I think it would be way too much for a street motor.</TD></TR></TABLE>

the 85mm block that we ran last year that has the o-rings is still assembled with the head on it so i don't have any pictures that i can put up of it, i will check around my old photos and see if i happened to take any of the build

 

Earl, just FYI, 85 mm is the largest that we can offer o-rings.

 

Just doesn't seem like enough meat where the cylinders come together (the most critical spot) to hold the o-rings at high boost.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by earl &raquo;</TD></TR><TR><TD CLASS="quote">Just doesn't seem like enough meat where the cylinders come together (the most critical spot) to hold the o-rings at high boost. </TD></TR></TABLE>

I haven't had any issues. Ran it on Gardella's Civic and Bergenholtz's CRX for a long time, no sweat!
I will try to get you a pic!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GoldenEagleMfg.com &raquo;</TD></TR><TR><TD CLASS="quote">I haven't had any issues. Ran it on Gardella's Civic and Bergenholtz's CRX for a long time, no sweat!
I will try to get you a pic!
</TD></TR></TABLE>

I had you guys step deck my block, at 85mm do you think that'll work also?

 

Sure will, the o-ring is just for added insurance on extremely high boost levels!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GSC Motorsports &raquo;</TD></TR><TR><TD CLASS="quote">Golden Eagle 85mm Headgasket - they take a stock one and bore it to match the size of the cylinder - work excellent

our blocks are o-ringed as well</TD></TR></TABLE>

But what if you need a thicker headgasket? Then I'm assuming you'd have to go through cometic...

 

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

But what if you need a thicker headgasket? Then I'm assuming you'd have to go through cometic...</TD></TR></TABLE>

why not just build the engine correctly to begin with and not have to worry about running a thicker headgasket, etc, etc

but to answer your question - i guess cometic would be an option although i haven't always seen the best results with them, just my .02 cents

 

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

why not just build the engine correctly to begin with and not have to worry about running a thicker headgasket, etc, etc

but to answer your question - i guess cometic would be an option although i haven't always seen the best results with them, just my .02 cents</TD></TR></TABLE>

Well, when I had b16 block done a few years ago by Golden Eagle I was told to run a .040 head gasket. Are you saying they didn't build it right?

My recent build done by Earl I was able to run the standard one .030. I was told that it depends on the blocks not necessarily the person putting it together.

 

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

Well, when I had b16 block done a few years ago by Golden Eagle I was told to run a .040 head gasket. Are you saying they didn't build it right?

My recent build done by Earl I was able to run the standard one .030. I was told that it depends on the blocks not necessarily the person putting it together.</TD></TR></TABLE>

dunno - i never heard it that way but i could be wrong - just going off my experience - other than trying to drop the compression i never thought there would be another reason to run a thicker headgasket, anyone else have insight?