Competition head porting

[HoleshotHolset]

Gene would never poke fun at anything like that... .



The flow numbers are pretty good for stock valvesize.....



Makes me wonder what we could do if we REALLY hogged one out... .



Are your valves backcut?



Where did you focus most of your efforts?



Matt

 

[Sled Puller]

Originally posted by 83 crew cab





I think Gene is poking fun more than anything

And now everybodywho has the die grinder in their hand right now, has that question going through their head,



"IS HE!?!?"



We will just have to wait and see if it is a or a:{



BTW, what does a head cost?

 

[HoleshotHolset]

Gene said: "BTW, what does a head cost?"



Is this a rhetorical question?

What does this have to do with the price of tea in China?



Matt

 

[83 crew cab]

Gene even If I trash a couple heads I still proble got less in it than you have in yours and I learned something other than how to spell another word in my check book

 

[Sled Puller]

Now there is a good work ethic!!



As long as I don't spend much money, and learn from the failure, it is ok to do things wrong, the first time and second... ..... . (not saying you are doing anything wrong)



Is that how you work on airplanes? Trial and error?



The important thing, is, are you having fun George?



I would rather spend the money to have something done right the first time, and learn from the masters, than learn from my own costly mistakes and keep doing something over and over.



My fun is driving it.

Besides, you have way more exprience than I do in engine building.

 

[Jim Fulmer]

83 crew cab



Off the subject, are you doing your own cage work!



Jim

 

[83 crew cab]

yea Jim we sure are 4 more bars and it will be done then its time to start the body work that I am not looking foward to at all

 

[HoleshotHolset]

I need to make friends with George..... sounds like he has a notch cutter, tubing bender, chop saw and at least a decent MIG welder.



Matt

 

[83 crew cab]

come on over Matt we up graded to a tig for the cage

 

[HoleshotHolset]

Hrmmm... traded a MIG for a TIG... . man I gotta move to Ohio!



Isn't that just glorified stick welding?!



Matt

 

[83 crew cab]

no its more like glorified gas welding but can do alum. and SS I still have the mig



I missed your qustion in your other post sorry



Are your valves backcut? not for theflow numbers but will get a 3 angle valve job before it goes back on



Where did you focus most of your efforts? manly around the vavle guide like piers shows and a lot tapering out to a gasket macth

 

[Jim Fulmer]

sounds like he has a notch cutter, tubing bender, chop saw and at least a decent MIG welder.



1. Got it... . Pro Tools

2. Got it... . Pro Tools

3. Got it... . Dewalt

4. Mig and Tig..... both Lincoln



Bending a cage to fit is a little different.



Jim

 

[HoleshotHolset]

Okay... . anyone see any reason why we can't backcut our valves... and then do a multiple angle valvejob?



I'm jealous of all you guys with anything more than a bench grinder, sawzall, air tools, and an old AC buzzbox - that's all I have at my disposal. But I do have a short-term heated garage... . anything that takes more than a day is more likely than not going to be denied.



I need to move out, hit the lottery, buy a garage and LOTS of tools and retire... . haha



Matt

 

[Cousin Billy]

Head porting flow numbers

Flow bench #'s PDR "stage II head"



These are the numbers on the head I got last year from Piers.

It has stock size valves.



Intake: Exhaust:

lift cfm lift cfm

100 73 100 66

200 125 200 120

300 156 300 156

400 160 400 173

500 165 500 181



I hope these numbers give you some help, if you have any

questions, give me a call at 859-635-1806. I live about 90

minutes from Jamestown, Ohio.





Cousin Billy

 

[83 crew cab]

thanks Bill the numbers help alot looks like I am flowing a little less at than yours at below . 200 inch of lift and a flowing alittle better than him over . 200 I wonder how much better his stage 3 head is ?



you being that close I may have to give you acall some time George

 

[J.R. Adkins]

Much better!







J. R.

 

[HoleshotHolset]

In that case... . I'll wait for the stage V head... .



Matt

 

[TxDieselKid]

Originally posted by HoleshotHolset

In that case... . I'll wait for the stage V head... .



Matt

Remember you link to the billet builders?

 

[HoleshotHolset]

Drew: I just finished lunch... but if I look at that site now... . I'm bound to drool all over my desk!



Matt

 

[83 crew cab]

JR I hear he gets $900(I thank that was on a 24 thought) for a stage one how much is the stage 3 if you know