028 super brain fart

[twinstaged]

Pulling out an old project that sat awhile and I can't find the notes I made. If any of you timed the stock ports do you have those numbers somewhere? I machined the jug and only know where I'm at now and I have an idea where I wanna be, but can't find the originals. Like to end up around 105 on my exhaust. How far off am I?

 

[twinstaged]

Well I raised it to 104. Just curious where the stock numbers were at.

 

[Hedgerow]

Well I raised it to 104. Just curious where the stock numbers were at.

I had a stock 028 super that was 112 degrees sans the base gasket.
Is that what you were wondering?

 

[twinstaged]

Yep pretty much. That doesn't ring a bell though... seems off. What was the intake at? Thanks.

 

[Hedgerow]

Can't remember.
Seemed it ended up at 165 intake duration, 106 exhaust, and 15 degrees of blowdown..
Ran fast, but not a good work saw.

 

[Al Smith]

Assuming but not knowing,although I own an 028 it would assume it be about what the rest of the design would .042,048 ,all the 038's are in the neighborhood of 101-102 with right at 20 degrees of blow down .