Nothing crazy or special. The goal was not to take too much material off so that the compression doesn't drop a bunch. The area around the valve reliefs was enlarged to improve flow at low lift.

No major portwork, just a brief grind to clean them up. The guides were replaced about 8k ago, and it would have been a hassle to remove them again to do any porting. I'm planning on having a fully worked head next year.

The combustion chambers had a lot of carbon buildup since the last time I had the head off (roughly 8000miles ago). So the chambers are now polished to a near mirror finish.

The head is a '97 ITR head. She also has Supertech Nitride valves, Supertech Retainers and valvesprings.

Enjoy the eye candy








More Pics/Info:
https://honda-tech.com/zerothread?id=1243357

Dyno:
https://honda-tech.com/zerothread?id=1391875

 

Marshall, when are you going to get it tuned with the ITB's and cams? I better see you at ITR Expo again next year.

 

looking good...

did you have to re-machine the head due to the overheating problem you had?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bradstard &raquo;</TD></TR><TR><TD CLASS="quote">Marshall, when are you going to get it tuned with the ITB's and cams? I better see you at ITR Expo again next year. </TD></TR></TABLE>

Soon...soon. Trying to organize a cam comparison on my motor within the next week or two. So far I have BC5's, Skunk2 Pro2+'s and Pro3+'s. And yes, I am already saving for next year's Expo, except I am definately trailering it this time.

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

did you have to re-machine the head due to the overheating problem you had?
</TD></TR></TABLE>

Yes, the overheating caused cylinder 3 to run severely lean and I blew apart a sparkplug in the middle of the AJ-R trackday. Parts of the plug got sandwiched between the exhaust valves, which created small knicks in the valves. Replaced the valves, did a fresh grind, did some of the combustion chamber work, and installed the Supertech valvetrain all at the same time.

The sparkplug that caused the problems:

 

I CANT WAIT TO STEAL YOUR CAR AND RUN IT AT A TEST AND TUNE DAY AT THE TRACK NEXT SEASON

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by racerboyb18c1 &raquo;</TD></TR><TR><TD CLASS="quote">I CANT WAIT TO STEAL YOUR CAR AND RUN IT AT A TEST AND TUNE DAY AT THE TRACK NEXT SEASON </TD></TR></TABLE>

Find some slicks on 5x114.3 wheels and we can both attack the track

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 92TypeR &raquo;</TD></TR><TR><TD CLASS="quote">the overheating caused cylinder 3 to run severely lean and I blew apart a sparkplug in the middle of the AJ-R trackday.</TD></TR></TABLE>

Damn, if it's not one thing it's another with your car. Glad you're staying on top of it though.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 92TypeR &raquo;</TD></TR><TR><TD CLASS="quote">
Yes, the overheating caused cylinder 3 to run severely lean and I blew apart a sparkplug in the middle of the AJ-R trackday. Parts of the plug got sandwiched between the exhaust valves, which created small knicks in the valves. Replaced the valves, did a fresh grind, did some of the combustion chamber work, and installed the Supertech valvetrain all at the same time.
</TD></TR></TABLE>

Well, I think it could have been a lot worse considering the cylinder ran lean. Goodluck...cylinder head looks good.

*85mm dreams...*