Recently ported this GSR head for a street car with 2.0 all motor setup and it resulted in 251 Whp.

 

and..?

 

Would you like a cookie?

 

No dyno sheet,no flow test,no specs.back up ur 251ponies

 

wow.....based on ur emoticon and print in ur pics it doesnt appear that u have strictly joined this forum to try and sell some ported heads thats look to be sub par....... but hey it could be the pics.


mike

 

edit double post


mike

 

Hey guys, I just wanted to share it, not a big thing, I think. I'll see if I can get the dyno graph this week.

 

It is nice to share. Would you happend to have a parts list to go with the dyno.

 

What u mean?

 

By " parts list " he means what does your set-up consist of..???

 

I am not sure, I just did the PP work. He asked me to do the P&P because he wanted to see if he can get a little bit more from his setup, then they tuned the car and it puts around 26 extra hp, then they change the fuel an hit 251. I am not aware of the changes in the fuel. I will try to get a copy of the dyno.

 

How do you port a head, and not know what you're porting for..?

 

Because I've ported many many B series honda heads throught years, and I've found a way that works and make good results in these engines, specially for what the guy was looking for. I am not saying I am P&P master, I am just sharing what I do with passion.

You may have a head with high CFM numbers and put it in an average engine expecting good results but much to your surprise, the engine loses power instead of having improvements. On the other hand you can put a simple P&P head in an average engine and have nice improvements. This is more than CFM numbers, this is more than how it looks, this is even more than who did the job, and his reputation, more than how much you pay to a bussines, not even all CNC heads are the better way to go. This is about understanding fluid mechanics and how thermal efficinecy relates between air, fuel and fuild combustion.

Did you knew that when you do P&P research in a handported prototype you can digitalized the design right? After it is in the CNC program the final result may flow between 3 to 6 precetnn less than the hand ported prototype? CNC is an easy way to make money doing heads faster and attractive, but doesnt mean that an individual who don't make any noise all around doesn't know anything about it. If I didn't knew anything about what I am talking about I wouldn't dare to post anything related to it.

Regards!

 

Again, if you didn't know what the setup of the motor was, how did you know how to port the head. What I'm getting at is, a guy showed up with a head and asked you to port it. You did so with no knowledge of the motor it was going on. So you've contradicted everything you just said...otherwise, you'd know what the setup of the motor was.

Where's the dyno graph?

Can you post better pictures of your port work? Like AMM said, it looks like sub-par work, but maybe it's just the cell phone pics...

 

Bore: 84mm
CR: 12.8:1
Skunk 2 pro IM (gasket match)
Ebay Tri Y header
70mm throttle
Skunk 2 pro cam, not sure if pro 1 or pro 2 but definitley not pro 3

The ported head in the picture, short valve guides, flat face valves, valve job, valve seat job.
don't know what injectors they are using.

It went from 218 to 242 after the head work with 93 oct, then with new fuel it hit 251, Im not aware of the fuel change.


Happy pal?

 

+1

 

Mildly satisfied since you asked. Post up the dyno graph(s) before and after your port work.

Post better pictures of your work because the ones you have up now aren't doing it any justice.

 

Right now I don't have the dyno for this one. But yes for another, a K20A2 head I recently ported. This is a K24 with K20 head: attached is the Dyno and a picture of the chamber work. I will try to reah the guy and get the dyno for the B series one.

 

Random Question.

Are you from Puerto Rico?

 

see now that looks better OP. at the level the engien is at i could believe a 23 whp gain being possible with the work done to the head.


mike

 

Yes, looking at the new picture, I could also believe a 23whp gain. Like I said those blurry pictures weren't doing you any justice. Nice work dude

Try to get the dyno graph for that B20. I'd like to see it.

 

Yes sir, I am from Ponce PR. I recently move to IL for work. And I started doing the P&P here as well. Maybe we know each other because I used to go to different dynos, most in the north and east of the island.

If there is anything I can help with, feel free to contact me

Regards!

 

solid.

 

Looking at that pic again, I see the exhaust valve guides were shaved down. I've always been under the impression that doing so is a no no because it subjects the valve stem to more heat which can cause it to melt. Is this more of a myth than anything? I've never done anything beyond cleaning up casting marks and knife edging because I'll openly admit I don't know what the hell I'm doing beyond that. I've always wondered about shaving down the guides and that picture made me remember what I'd heard about doing so on the exhaust guides. Can anyone shed some light on this for me?

 

We don't know each other but I just wanted to know if you were the Melvin Ports from PR (responsible for the head work on several 12 second mild setup N/A sohc d-series). You confirmed that.