Does anyone here have DPR done headwork? What are your other modifications and how do you feel about the power increases? Comparable or equal to Portflow? Obviously, the variables of each person's different engines and uses are subjective, but I just want to know what users think.

 

Didnt DPR fall through?

 

They are still around, you just don't hear about them much anymore. They do excellent work. I would consider them equal to Portflow.

 

call portflow or topspeed. even eric's racing is really good too

 

I do but it's not installed yet. i will be doing a clay mock up hopefully next week.






And before you all ask, it cost double what it cost's anywhere else.
Just a FYI , Tom from portflow used to work for Dpr, Eric from Eric's racing did and Joe erics porter also did.

 

How long did it take? What did you get done to it? What do they usually charge?

Does anyone have a site for head work, what is topspeed?

 

for the stage V, VI they were charging 1550 and this was years ago.. In my mind there is no doubt that they do good work. I've been to there facility and spoken to Dan several times, however the price is too steep. Portflow I heard is the best bang for the buck.

FAST94GSR who just lost his nice ported head due to a faulty oil pump..

 

looks good.
i want to get it done 2

 

What stage is the headwork? And, for what application? -NA or FI

I'm just kinda curious b/c they didn't cut the valve guides and weld the CC up.

 

It's a stage 6 and yes Dan did weld the combustion chambers up because this is a type r head not a gsr. If you saw my pistons you would understand why It's not cloverleafed. This is a higher cr na motor,13.1 with a 40 thou gasket. I didnt want the guides cut off, I thought they would get a trim but I guess I didnt pay enough . Btw the guides are all new because I cracked the old ones.

 

What do you guys think of PYR's work???

 

Anyone have dynographs? If you don't mind.

 

took 5 months to do my friends B16a head.......

Brian

 

61hp over a stock LS head i would assume

 

I have DPR stage 6 headwork also, and will post up pics soon.

 

Here are some DPR stage 6 headwork pics