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Search found 516 matches

by jed
Sun Aug 02, 2020 9:08 pm
Forum: Vintage/Classic/Historical Engine Tech
Topic: Evolving the Side valve flat head design idea
Replies: 50
Views: 904

Re: Evolving the Side valve flat head design idea

Are these engines NA??? From the data you have you give us a us intake valve size, the throat size, where is the choke point, the adverage CSA, how big in cc's are the intake block ports, the length of the intake port from intake seat to the plenum or the end if the injector stack, are the valve sea...
by jed
Sun Aug 02, 2020 5:21 pm
Forum: Vintage/Classic/Historical Engine Tech
Topic: Evolving the Side valve flat head design idea
Replies: 50
Views: 904

Re: Evolving the Side valve flat head design idea

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.
by jed
Sun Aug 02, 2020 4:41 pm
Forum: Engine Tech
Topic: Low and medium lift Flow
Replies: 11
Views: 633

Re: Low and medium lift Flow

Read the foot notes just below the Post Reply.
Then read those foot notes. When you get through reading all the foot notes your question will have Answer's.
by jed
Sat Aug 01, 2020 9:23 am
Forum: Engine Tech
Topic: CR with E85 on boost?
Replies: 8
Views: 1836

Re: CR with E85 on boost?

What happened to SWR???
I always enjoyed reading his posts.
by jed
Wed Jul 15, 2020 9:04 am
Forum: Engine Tech
Topic: Exh flow
Replies: 15
Views: 848

Re: Exh flow

It is interesting to see/read how two different styles/thoughts on porting produce similar results.
by jed
Wed Jul 08, 2020 9:26 am
Forum: Engine Tech
Topic: measuring JE coated pistons
Replies: 15
Views: 558

Re: measuring JE coated pistons

My understanding is the piston clearance is in the piston, not the bore. So if a 4.000" bore, then a correctly finished piston that requires 0.003" clearance will measure 3.997"at room temp. Exactly correct. It is very rare now days to see a piston that is made incorrectly. If you finish the bore t...
by jed
Sat Jul 04, 2020 3:26 pm
Forum: Engine Tech
Topic: Valve job with stones
Replies: 29
Views: 1037

Re: Valve job with stones

Just as a reminder when you dress a stone any stone the you must have a good diamond with a sharp point.
by jed
Sat Jul 04, 2020 2:48 pm
Forum: Engine Tech
Topic: Valve job with stones
Replies: 29
Views: 1037

Re: Valve job with stones

There is a lot if good information in all the posts above. Pay attention to each post and make a list of do and dont's. You asked does the rough seat matter. Yes it matters. The seat should be as smooth as possible and flat. Dress your stone to keep it sharp and flat. The stone will cut faster and y...
by jed
Mon Jun 15, 2020 8:52 am
Forum: Engine Tech
Topic: Valve seat rim sitting proud in chamber - Detonation risk?
Replies: 16
Views: 687

Re: Valve seat rim sitting proud in chamber - Detonation risk?

Be careful putting in a larger valve seat and sinking it deeper there may be water close??? it appears from the pictures that coolant has seeped in to the cylinder probably from a bad head gasket sealing. in picture number one at the top there shows pitting just above the seat ring and it can be see...
by jed
Fri Jun 12, 2020 8:05 am
Forum: Engine Tech
Topic: 400 SBC build
Replies: 74
Views: 2634

Re: 400 SBC build

sounds good to me
by jed
Tue May 26, 2020 8:36 am
Forum: Engine Tech
Topic: Wireless / wifi borescope options
Replies: 12
Views: 799

Re: Wireless / wifi borescope options

I have not purchased one my self but have used other people's bore scopes that have. My phone was never capable of supporting a bore scope. if I rember right, it's been 6/8 years ago, the cord was 4/6 feet long, the end that held the camera and light was about 3/16 in diameter and less than a 1/2 lo...
by jed
Sat May 23, 2020 9:37 am
Forum: Engine Tech
Topic: Rocker arm ???
Replies: 18
Views: 1159

Re: Rocker arm ???

just rember that with a die grinder and a stone you can clean up the rocker arm slot and make it longer.
by jed
Sat May 02, 2020 3:03 pm
Forum: Engine Tech
Topic: Hyd Roller SBC bracket drag car
Replies: 91
Views: 3307

Re: Hyd Roller SBC bracket drag car

A good HD roller lifter is the liest of your worries.
by jed
Sat Apr 18, 2020 8:35 am
Forum: Engine Tech
Topic: 2007 Lincoln mkz head????
Replies: 9
Views: 573

Re: 2007 Lincoln mkz head????

do you have a casting number??