[stefan525]

Well it's back. It's been two months since I sent it out to them, but well worth the time. This thing is beautifull. I don't even want to put it in the car, thats how good it looks. But ill take some pics and put them on later. Im at work right now but I had to tell someone, thats how excited I am about this thing. stefan525

 

[MichaelDelaney]

Endyn did his porting.

need pics of the intake and exhaust ports and the seat angles if you can get them. did the injector bosses get the dimples? what cam is this head made for BTW?

 

[stefan525]

Yes the injector bosses did get the dimples. Im going to use CTR cams and Roller Wave's 12:1 cr. Im going to get pics this afternoon, after work. stefan525

 

[DefiantGSR]

that's a lot of compression for CTR cams.

 

[bruinteg]

How much was the headwork if you don't mind answering. What does this headwork involve besides the aforementioned porting and valve angle job?

 

[stefan525]

here we go.

 

[stefan525]

the only thing I can quote you is what I had done cost me $1300 including shipping both ways. stefan525

 

[MichaelDelaney]

I'm surprised Larry let you use 12:1 with itr cams.

 

[stefan525]

Im using CTR cams. Keep in mind that the head was ported to meet the CTR cams and 12:1 cr. I know you are worried that I will undercam the eng. but I all ready have the CTR's in my eng, so im going to run them for now. stefan525

 

[JohnnyRed]

I dont know if it's been explained but what does dimpling the injector thigns do. Just curious.

 

[MichaelDelaney]

we explain dimpling in the ideas: flow flow velocity, flow quality article and in my headporting article over at automotivetech.org. it's like the effects on a golf ball. it allows the spray to stay atomized when it leaves the injector nozzle and prevents the fuel from raining out at a high turbulence flow area. the edges of the dimples must be sharp to the touch.

stefan, if he ported for CTR cams then he will have gauged the flow for a 8500 rpm redline and those cam specs. The porting will be geared towards making a powerband around that package's powerband. Or did you tell him you were upgrading the cams to a specified spec?

 

[stefan525]

I told him that im using CTR's, but I also talk to him the other day and talk some more about upgrading cams. He told me that I would be ok if I run diff. cams as long as I don't go too wild. But for now ill stick with CTR's and see how it performes when im done.

PS: future plans are:

gsr 1.8 block. 81.5mm bore
gsr head Endyn ported
Endyn roller wave pistons 81.5mm
OEM stock head gasket
OEM bearings
Eagle rods
ITR header
Skunk2 IM
12->12.5:1 cr

 

[integra366]

It also appears that atleast some material was taken from the relief areas, so that will lower CR just a bit. Going off the fact that RSXs now come with 11:1 CR made to run on 91 octane, I dont think that 12:1 on 93 would be that bad...given that you dont know what dynamic CR is on both engines and the RSX has totally different flow/combustion characteristics.

 

[MichaelDelaney]

I run on 12:1 and 93 octane daily driven. ..it's not just the octane...it's your ecu reprogram and fuel upgrading that allows you to run on 12:1 CR. if you don't injector/pump upgrade, reprogram, and tune, you're f**ked.


at least you know not to get toda b/c, or skunk2 stage 2, or jun 3.

toda a's, piper bp285 / cat, spoon, rocket m22, crower 402's-403's, crane stage 1, skunk 2 stage 1.....

ITR header? I hope you mean aftermarket after going this far with the head/IM, bottom end, and cams.

 

[stefan525]

its the JDM ITR 4-1 2.5" collector. with 2.5" catback exhaust. Apex-i Power Fc computer. stefan525