Originally Posted by Curtis Shipp
The shaft seal
fit on a 108 is 2.248. The flange is 3.999/3.997. You can find a workshop manual at bluemoment.com. The seal will be split on one side to go over the flange then captured by the housing and have .020 press in the housing. I am not an expert on perkins but I have been studying the problem for a week. I will fix mine and any others that want to seal their perkins. I still do some automotive work. The last 406 Clevor Ford I built pulled 560 hp and is in a pickup. Normally I build HiPo Chevys strickly for the street.
I have multiple .pdf Manuals
(fm. 1961 through 1988) for both service
that I can forward You via PM or email
if You'd like or if it'll assist in any way?
I also wish to sign up for 4(FOUR) of these as soon as You have the bugs worked out, or information fm. "GUY" as to the existing fix that he has as info. on his boat in Guatamala, as I have 2 4.108's now and know rebuilders who'd 'test drive' the other two and if they behave as advertised would want dozens, if not hundreds for the long term (they rebuild
about a half doz. 4.108's & 4.107's a month). Anybody building better mousetraps gets my business, always!
vessel, classic Pearson
P39 doesn't even LEAK
...yet, but then again, Why WAIT, right?)
that sips fuel
at 2050 rpms & moves us at hull speed
(10kts) and it'll be a very cold day before I replaced w/anything else.