Put about 70 miles on the bike, and still working out a lot of bugs. The new main seal is slightly leaking, and our concern is the S&S pump has too much pressure. On a cold start the PSI needle gets pinned at 60 - but as it warms up it stays around 20. We are going to replace the seal and hope that solves it.
Only other thing I'm scratching my head over - the bike can NOT be started with the kicker. The 4 speed tranny was completely rebuilt with Jims gears, so everything is new. Although it seems to be turning the motor, it's seems a tad sluggish. No matter what I try, the bike wont start or even sputter. Hit the starter and it fires immediately. Almost like the clutch is not fully engaged?
1 we when the oil pump is being up dated to the S&S - i remove the pressure spring that is an EVO engine style and could be a hi pressure hi volume oil pump totally not what is going to work in some shovels -
the original oil pump is a -68 no letter and its spring is closer to the iron oil pump in pressure ( remember the early engines only needed flow not pressure and spit oil out what it does not have the ability to control ) so i will try and remember to get you the part number for the early spring < first thing to do
2 - the thing you will need to help to do is the excess air from back entering the engine buy using a PCV type valve close to the bottom engine vent < its the excess air and its overwhelming of the venting system that will blow every seal in the engine all the time — and route the hose up and over the oil tank works also
will try to picture up the 2 things i talked about - they had in the past made a correct replacement oil pump but today that is gone and your using a big block Chevy oil pump on your lawn mower kind of thing so you need to become creative to control its volume
- install the plastic ram jet retainer and the alloy plate and your clutch issues are no more
Ok the number for the PCV 40-0875 from v twin - we use and go to Harley and buy the brown umbrella valve for the top rocker box # - 26586-89 original number of the original dont have the new number
If your clutch could use some help - we use red alto discs and remove the ball and springs today most steels done come with them anymore
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Ok the number for the PCV 40-0875 from v twin - we use and go to Harley and buy the brown umbrella valve for the top rocker box # - 26586-89 original number of the original dont have the new number
What umbrella valve are you referring to on a shovelhead rocker box?
John - I really appreciate the input. I will look into getting everything you mentioned, and see if it improves. We were going to change the main seal tomorrow, but I probably should hold off until I adjust the oil pump and install the breather valve first... maybe that will cure the leak?!
Let me know when you get the right number on that spring.
05-22-2023 | 09:42 PM
