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Search found 53 matches

by Pete1
Sun Aug 02, 2020 7:03 pm
Forum: Vintage/Classic/Historical Engine Tech
Topic: Evolving the Side valve flat head design idea
Replies: 50
Views: 980

Re: Evolving the Side valve flat head design idea

jed wrote:
Sun Aug 02, 2020 5:21 pm
I was thinking the same thing. Large intake ports and valves would work good at Bonneville but not so well on a short
track engine.
I would agree normally but I only have data on large flatheads, 315 ci or more. Nowdays 321. It works.
by Pete1
Fri Jul 31, 2020 10:36 pm
Forum: Vintage/Classic/Historical Engine Tech
Topic: Evolving the Side valve flat head design idea
Replies: 50
Views: 980

Re: Evolving the Side valve flat head design idea

I often wonder why H-D when they had an almost unlimited development budget, didn't think about bigger ports and valves. While bigger is sometimes slower flow with N/A, on a flathead Ford it means more hp if the volume goes up. We did flow testing back in the late 50's with ports enlarged by welding...
by Pete1
Fri Jul 24, 2020 10:05 pm
Forum: Vintage/Classic/Historical Engine Tech
Topic: Racing Vintage Engines
Replies: 11
Views: 315

Re: Racing Vintage Engines

XF/FMR to run at Bonneville.
by Pete1
Fri Jul 17, 2020 8:01 pm
Forum: Vintage/Classic/Historical Engine Tech
Topic: Question about modern technology cam for Early FordFlat Head
Replies: 21
Views: 2198

Re: Question about modern technology cam for Early FordFlat Head

I know about the NOS French flatheads but still.. pdq67 There's a US company that makes blocks. Edelbrock and Offenhauser make heads. You can buy every part, brand new, made in America Most vintage racing associations will not allow after market or French blocks. Mods to an OEM block are unlimited ...
by Pete1
Thu Apr 09, 2020 4:51 pm
Forum: Engine Tech
Topic: Spintron
Replies: 65
Views: 3714

Re: Spintron

In 1956 when we were developing the Allison race cams we set up a head with one cylinder’s valve assembly in it with a variable speed motor to drive the cam. We ran it up to operating rpm range and stopped motion with a strobe-o-tach. We then photographed the assembly with a macro lens equipped came...
by Pete1
Wed Mar 25, 2020 12:12 am
Forum: Engine Tech
Topic: Ford DS II ignition upgrades?
Replies: 18
Views: 1191

Re: Ford DS II ignition upgrades?

"nothing ever made power above 5500 until 1972"

Oh???
by Pete1
Sat Dec 21, 2019 5:14 pm
Forum: Offtopic Forum
Topic: Public service announcement
Replies: 0
Views: 320

Public service announcement

Public service announcement. A glass of wine To my friends who enjoy a glass of wine, and, those who don't and are always seen with a bottle of water in their hand: As Ben Franklin said: "In wine there is wisdom, in beer there is freedom, in water there is bacteria. In a number of carefully controll...
by Pete1
Thu Oct 17, 2019 12:21 am
Forum: Engine Tech
Topic: Comp Cams Dual Conical SR Valve Springs
Replies: 20
Views: 1896

Re: Comp Cams Dual Conical SR Valve Springs

Speaking of valve springs, did anyone here ever see a set of Isky SBC desmo heads when they were available?
by Pete1
Tue Oct 08, 2019 10:52 pm
Forum: Engine Tech
Topic: New pistons 73g heavier
Replies: 54
Views: 2851

Re: New pistons 73g heavier

"5 + 5 = 10 grams. 50% of weight for reciprocating is 5 grams." Roger on that. After 4 martoonies, thingz get off a bit. For vintage circle track engines, we go for as light a bob weight as we can get. I have taken more than that off of forged pistons many times. From just looking at the picture, I ...
by Pete1
Tue Oct 08, 2019 9:35 pm
Forum: Engine Tech
Topic: New pistons 73g heavier
Replies: 54
Views: 2851

Re: New pistons 73g heavier

Get the lighter pins. The rest can be easily taken out of the pistons.You will need a mill for that.
If you can hit the old weight within 5 grams, (10 on bob weight) it will run with no problem.
by Pete1
Tue Oct 01, 2019 8:18 pm
Forum: Engine Tech
Topic: When are you switching to synthetic?
Replies: 79
Views: 4186

Re: When are you switching to synthetic?

The GOV did do it. The GOV mandated catalytic converters and the zinc kills them. There isn't one single moron in the government with the brains to pour piss out of a boot, with instructions on the heel and yet they want to tell automakers and everyone how build what they build. The government IS t...
by Pete1
Sun Sep 29, 2019 3:50 pm
Forum: Vintage/Classic/Historical Engine Tech
Topic: Flathead chamber design
Replies: 151
Views: 3950

Re: Flathead chamber design

Pete any experience with raiseing the intake seat and or lowering the exhaust seat. Do you find much reversion On long duration camshafts? And if so how do you deal with it? > No, on raising or lowering seats. It is something to fiddle with though. I run reversion dams in the exhaust. With the inta...
by Pete1
Tue Sep 24, 2019 9:34 pm
Forum: Engine Tech
Topic: Pennzoil 20w50 Racing Oil
Replies: 26
Views: 2689

Re: Pennzoil 20w50 Racing Oil

How popular is Pro-V?
by Pete1
Mon Sep 16, 2019 10:06 pm
Forum: Engine Tech
Topic: 406 sbc rotating assy
Replies: 26
Views: 1851

Re: 406 sbc rotating assy

What a crock. For a certain price they will do a half ass job and for another $125 they will do it better. Notice I said "better" not right.
A company that does it that way is most likely not capable of doing it right.
by Pete1
Mon Sep 09, 2019 9:17 pm
Forum: Vintage/Classic/Historical Engine Tech
Topic: Flathead chamber design
Replies: 151
Views: 3950

Re: Flathead chamber design

<r><QUOTE author="motormonkey" post_id="826353" time="1568073383" user_id="743"><s>[quote=motormonkey post_id=826353 time=1568073383 user_id=743]</s> Pete1. Can you share the max rpm your making power at. Also are you running the French blocks or ford blocks. <e>[/quote]</e></QUOTE> The cam will det...