Gawd I Hate Points, Won't keep a tune |
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Gawd I Hate Points, Won't keep a tune |
bbrock |
Sep 4 2021, 08:09 PM
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#1
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914 Guru Group: Members Posts: 5,269 Joined: 17-February 17 From: Montana Member No.: 20,845 Region Association: Rocky Mountains |
Quick background. Engine is a rebuilt 2L with Elgin cam and Weber 40IDFs. I bought a Pertronix Ignitor 3 to avoid having to mess with points but I could only get it to work well with a NOS Bosch 050 distributor. It runs rough with a brand new Bosch clone SVDA and the OE dizzy. However, the engine runs best with the OE DVDA distributor so I'm running that with points.
The problem is that I've had to adjust dwell and timing 3 times in only 1,000 miles of driving. Each time the dwell creeps up until the engine starts spitting and farting and is a bit hard to start when warm. Readjusting the dwell and timing gets it running like a top again. So (IMG:style_emoticons/default/WTF.gif) Only thing I can think is that the phenolic block on the points is wearing crazy fast. I lubed the cam and block with high temp slicone grease and I can feel it is still on there. Did I just get a shitty set of points? |
jd74914 |
Sep 7 2021, 09:11 AM
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#2
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Its alive Group: Members Posts: 4,780 Joined: 16-February 04 From: CT Member No.: 1,659 Region Association: North East States |
Sorry, haven't read the whole thread but...
I've had this very same issue and the cam follower block you have pictured was wearing very quickly. It was annoying, but as a broke undergrad messing with points really wasn't a big deal for me (funny part was this was mid-2000s...no one had any idea what I was doing haha). About 2-3k miles in it actually broke and left me on the side of the road. Interestingly the bad parts were genuine Bosch and I just assumed I had received a defective unit with maybe bad phenolic mix or defect. Replaced with a second set (also Bosch) which had a slightly different looking block. Almost appeared to be a piece of fiberglass-reinforced phenolic vs. straight phenolic. That set of points had no issues and literally went 20k miles without any adjustment required. |
bbrock |
Sep 7 2021, 12:42 PM
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#3
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914 Guru Group: Members Posts: 5,269 Joined: 17-February 17 From: Montana Member No.: 20,845 Region Association: Rocky Mountains |
Sorry, haven't read the whole thread but... I've had this very same issue and the cam follower block you have pictured was wearing very quickly. It was annoying, but as a broke undergrad messing with points really wasn't a big deal for me (funny part was this was mid-2000s...no one had any idea what I was doing haha). About 2-3k miles in it actually broke and left me on the side of the road. Interestingly the bad parts were genuine Bosch and I just assumed I had received a defective unit with maybe bad phenolic mix or defect. Replaced with a second set (also Bosch) which had a slightly different looking block. Almost appeared to be a piece of fiberglass-reinforced phenolic vs. straight phenolic. That set of points had no issues and literally went 20k miles without any adjustment required. Thanks for this! Good to know a fresh set of points might solve the problem. Not good to know that even Bosch points can be afflicted. Hopefully I'll get a good set. If I can just get it to hold a tune for the next couple thousand miles, I'll be happy. (IMG:style_emoticons/default/beerchug.gif) |
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