|
Author
|
Message
|
|
miker
|
|
|
Group: Forum Members
Last Active: Last Week
Posts: 1.9K,
Visits: 195.0K
|
Blacktie, exactly. A washer and acorn nut go on top. Seems like a lot of fiddling around to avoid a ham handed mechanic. Maybe Doc sold a lot of engines to them. Ive always run cast valve covers and been careful about tightening them on any engine. And a lot of the cores I’ve torn down showed warped covers and leaking gaskets. But I’ve not had that problem.
miker
55 bird, 32 cabrio F code
Kent, WA
Tucson, AZ
|
|
|
|
|
55blacktie
|
|
|
Group: Forum Members
Last Active: 2 days ago
Posts: 1.3K,
Visits: 1.9K
|
miker (4/5/2026)
Blacktie, exactly. A washer and acorn nut go on top. Seems like a lot of fiddling around to avoid a ham handed mechanic. Maybe Doc sold a lot of engines to them. Ive always run cast valve covers and been careful about tightening them on any engine. And a lot of the cores I’ve torn down showed warped covers and leaking gaskets. But I’ve not had that problem. My 55 Tbird has the cast "Dress-up" valve covers (most do, whether or not original). I also have an Ace cast valley cover that will go on my new build.
|
|
|
|
|
KULTULZ
|
|
|
Group: Forum Members
Last Active: 2 days ago
Posts: 1.9K,
Visits: 306.4K
|
Here is my thought - There were two styles of grommets for the FYB. One was original assembly and did not have the integral washer (B4A 6570-A). The other, a 1959 model year parts superscession, had the integral metal washer (B9A 6570-A). If one were to take the early style and reduce the grommet diameter and reduce the O.D. using the proper size hole punch (used to make gaskets from gasket paper), it should yield a proper service part. This would seal the opening and allow the brite finish washer and acorn nut usage for proper appearance (to me anyways). It is the little details that set one engine apart from another.
 
____________________________
|
|
|
|
|
KULTULZ
|
|
|
Group: Forum Members
Last Active: 2 days ago
Posts: 1.9K,
Visits: 306.4K
|
"Years ago there was a Yblock rebuild series, I think it was Doc Frohmader. He put a nut on the rocker shaft stud then the grommet, and set the valve cover in place. He adjusted the nut till he got the pressure he wanted on the vac gaskets, then tightened them down. This prevented over tightening the vc and pushing the gasket out." Do you notice any difference(s) between these two parts illustrations?
____________________________
|
|
|
|
|
miker
|
|
|
Group: Forum Members
Last Active: Last Week
Posts: 1.9K,
Visits: 195.0K
|
Looks like you got it K. Look close, the washers on mine are Susan B dollars. Just a little joke for tbird guys 
miker
55 bird, 32 cabrio F code
Kent, WA
Tucson, AZ
|
|
|
|
|
55blacktie
|
|
|
Group: Forum Members
Last Active: 2 days ago
Posts: 1.3K,
Visits: 1.9K
|
miker (4/5/2026)
Looks like you got it K. Look close, the washers on mine are Susan B dollars. Just a little joke for tbird guys Does she need "Depends"?
|
|
|
|
|
miker
|
|
|
Group: Forum Members
Last Active: Last Week
Posts: 1.9K,
Visits: 195.0K
|
No, but they were cheaper than the “authorized replacements” with shipping and handling.
miker
55 bird, 32 cabrio F code
Kent, WA
Tucson, AZ
|
|
|
|
|
KULTULZ
|
|
|
Group: Forum Members
Last Active: 2 days ago
Posts: 1.9K,
Visits: 306.4K
|
What I meant for his reasoning is he must have come across the 1st engineering ILL and thought the grommet went underneath the rocker cover. It was a misprint. The 2nd ILL is correct.
____________________________
|
|
|
|
|
KULTULZ
|
|
|
Group: Forum Members
Last Active: 2 days ago
Posts: 1.9K,
Visits: 306.4K
|
That is a nicely detailed engine compartment. Any chance of a full photo?
____________________________
|
|
|
|
|
miker
|
|
|
Group: Forum Members
Last Active: Last Week
Posts: 1.9K,
Visits: 195.0K
|
Thanks K There’s been a couple differences versions. One of the original build, 320 stoker with the Paxton supercharger. Very early digital camera, the color is off. The other is the current version with the Mummert heads and EFI. The smaller chambers increased the static ratio to 10.7, so the supercharger had to go. Replaced with a/c.  
miker
55 bird, 32 cabrio F code
Kent, WA
Tucson, AZ
|
|
|
|