Heres a link to the old post, I started a new one as the old one was getting to long and the mods dont like that.
https://honda-tech.com/zerothread?id=1139085
A quick recap..
My cyl head needed repair after bending some valves while doing cam testing.
Head was originally a DPR stage 6 head that was reworked and modified by Racingflow after me bending valves after Dpr had oringinally done the work.

This was a 100% completey ported head that had made 247 at one point in time in its running on my car..
I sent the head to Brad at RLZ engineering for repair and he told me that he felt that he could modfy the alreay ported head to pick up mopre power and thats how this whole thing started..
My last dyno pulls made on a dynojet refleted the wear and tear on the motor as it has over 10,000 miles on it and over 300 dyno pulls and my power had dropped to 236.9 whpand 155 tq.

Heres the current setup as dynoed..

85 mm bore Dart block
stock gsr 87.2m stroke
endyn oil pump
12.5 cr.. All my previous dynos were at 13.5 so that makes these gains all the moe impressive
RLZ modified ITR cyl head with 1mm oversize Ferrea intake valves and stock size exhaust valves
Jenvey 48mm ITB's with 580 cc injectors
Hondata s200
Smsp header with 2 3/4 exhaust stepped up to 3 inch from the cat back
Distributor King dist with msd 6al ignition,blaster ss coil and stock plug wires .
105 oct unleaded pump gas..

This is an overlay from my last runs made on a dynojet to my high run made this week after the cyl head modifcation.


I'll add more as I think of it..
If you reference my old post you will see the cyl head flow gains overlayed with the head as Rlz received it.. My power gains almost mirror the graph from the flow gains.

My 2nd pull was like 242 right off the bat.. We were all very happy when we saw that as it was pretty much my high before.

 

:shocked:

 

i love your setups.

you make newbs like me look up to people like you and all the guys in cali who do nasty head work.

props to tbone and rlz!!!

 

god damn

 

badass brad knows how to get it done

 

by the way.... RUN A 10 THIS YEAR T-BONE!

 

Hi T-Bone...Why did you lower your cr?

 

WOW!!! great numbers

 

Are you running hondata or neptune? Whats your total timing at? A/F ratio's?

 

Very impressive

What cams did you end up sticking with? Skunks I presume?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Edgar &raquo;</TD></TR><TR><TD CLASS="quote">
Hi T-Bone...Why did you lower your cr?</TD></TR></TABLE>

Result of headwork.

 

i believe he used the BC 4

 

Tom and Brad are some ballers yo.

 

Where did the loss compresion come from? Did you had chamber work done or did you change the H.G. thickness considerably?

I don't remember anything said about a different piston being used that is why I ask?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ceLtic &raquo;</TD></TR><TR><TD CLASS="quote">i love your setups.

people like you and all the guys in cali who do nasty head work.

</TD></TR></TABLE>

Tbone and Rlz are East coast <TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Edgar &raquo;</TD></TR><TR><TD CLASS="quote">
Hi T-Bone...Why did you lower your cr?</TD></TR></TABLE>

Had no chocice ... the chamber work to fit the 1mm over valves required extensive work.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Casey &raquo;</TD></TR><TR><TD CLASS="quote">badass brad knows how to get it done </TD></TR></TABLE>

This is proof of that for sure.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by crazyitr &raquo;</TD></TR><TR><TD CLASS="quote">Are you running hondata or neptune? Whats your total timing at? A/F ratio's?</TD></TR></TABLE>
I'm running Hondata.. I dont have acess to Neptune unless I drive 3+hrs to Jeff Evans.<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 92TypeR &raquo;</TD></TR><TR><TD CLASS="quote">Very impressive

What cams did you end up sticking with? Skunks I presume?</TD></TR></TABLE>

I'm running the Buddyclub stage 4's.. Jeff evans still has my pro-1's at his place.
I have the buddy 5's but there too big for my motor, we can only go +2 intake 0 exhaust on the gear before we have valve to valve issues.. The buddy 4's can be run at +4intake and -4 exhaust before I have any issues at all.
Cam gear setting were at +4 -1 for final on the buddy 4's
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by asubennett &raquo;</TD></TR><TR><TD CLASS="quote">Where did the loss compresion come from? Did you had chamber work done or did you change the H.G. thickness considerably?

I don't remember anything said about a different piston being used that is why I ask?</TD></TR></TABLE>

We havent changed anything except the headwork and I changed my rod bearings.
Same head gasket thickness and everything.

 

holy crap, those are insane numbers

i'll be happy if I pushed 230-235ish whp on my setup

 

hmmm....i did not know that rlz was east coast. i knew you were but hmm...this is making me think that i should get a spare head and send it off..


mind telling me how much the head work was?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ceLtic &raquo;</TD></TR><TR><TD CLASS="quote">hmmm....i did not know that rlz was east coast. i knew you were but hmm...this is making me think that i should get a spare head and send it off..


mind telling me how much the head work was? </TD></TR></TABLE>

I am not going to discuss the $'s We worked alot of things out as this was a very large project with all the flow testing that was done...

 

Simply awesome

 

rlz &gt; everyone..

255 NA HP sounds bad *** on the dyno btw

 

awesome numbers. cant wait to see some new times

 

brad deff gets the stuff done......it was fun playing with your head too, tom

 

Damn, thats all i can say

 

 

congrats ... awesome numbers!!!