Alright fellas, I’m going to need a lot of help on this one. I’ve been struggling with this engine for a while and I’m trying to nail down what might be happening before I decide how to move forward.
Bear with me on this one, Details:
It’s a 1975 74ci cone shovel. When I bought it I was told that it had the “evo oiling kit” installed with shimmed evo rocker arms and not the roller rockers. So far I know it has an EV27 cam, one s&s tappet block, one Harley evo tappet block, s&s quickie pushrods & hydraulic evo lifters. S&S super E, points ign
What I have done:
I had new rings installed because the olds were shot. I rode it a few miles but it was smoking so, full top end rebuild. I also had to make some changes in the build along the way so I installed a S&S oil pump.
After it came back from the rebuild it started right up no problems. After a the heat cycles I took it for the break in mile and it was running like shit. It would bog when rolling on the throttle and seemed to be carb issues. I replaced it with a carb that I know was dialed in, same issues. After trying to dial it in the plugs began to foul. Now anytime I put new plugs in it will start up fine, idle great, but when I put it in gear the plugs will immediately foul within 5 mins and stall out. Also forgot to mention that it’s spitting fuel through the carb pretty decently as well
My plans:
I’ve talked with multiple people and we have walked through this engine multiple times with their responses the same “that’s odd, it should run fine.” I’m leaning towards pulling the evo crap out and replace all the stock shovel parts and go from there. I will try to upload a link to a few YouTube videos for further diagnosis
Bear with me on this one, Details:
It’s a 1975 74ci cone shovel. When I bought it I was told that it had the “evo oiling kit” installed with shimmed evo rocker arms and not the roller rockers. So far I know it has an EV27 cam, one s&s tappet block, one Harley evo tappet block, s&s quickie pushrods & hydraulic evo lifters. S&S super E, points ign
What I have done:
I had new rings installed because the olds were shot. I rode it a few miles but it was smoking so, full top end rebuild. I also had to make some changes in the build along the way so I installed a S&S oil pump.
After it came back from the rebuild it started right up no problems. After a the heat cycles I took it for the break in mile and it was running like shit. It would bog when rolling on the throttle and seemed to be carb issues. I replaced it with a carb that I know was dialed in, same issues. After trying to dial it in the plugs began to foul. Now anytime I put new plugs in it will start up fine, idle great, but when I put it in gear the plugs will immediately foul within 5 mins and stall out. Also forgot to mention that it’s spitting fuel through the carb pretty decently as well
My plans:
I’ve talked with multiple people and we have walked through this engine multiple times with their responses the same “that’s odd, it should run fine.” I’m leaning towards pulling the evo crap out and replace all the stock shovel parts and go from there. I will try to upload a link to a few YouTube videos for further diagnosis
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