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? |
bbrock |
Sep 11 2021, 12:59 PM
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#2
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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 |
Continuing the saga. I drove the car to town and back twice since the last tune-up. Roughly 80 miles total counting the test drive after the tune-up. The car was already starting to sputter and because hard to start. This morning I checked the dwell and once again, it had increased (51 deg).
Yesterday, the replacement points arrived. I swore I ordered Bosch brand points but what arrived were WVE brand which I have never heard of. I was mad and checked the order invoice and sure enough, they were listed as WVE. Not sure where the mixup occurred. I was a little less mad when I saw WVE is made by NGK. They also came with a little capsule of grease. They also look like they have fiber in the wear block like @jd74914 described. Pulled the old points and compared to the new. Tried to get a better pic but the wear block on the old points is much shorter and now I can even see the angle of contact with the came worn into them. If these points started out with a wear block like the new ones, then they have lost about 2mm which is a LOT of gap chance. Plugged in the new points and dialed them in to 46 deg dwell and reset the timing to 27 deg BTDC @ 3500 rpm with vacuum blocked off. Idling smooth at 650 rpm with vacuum connected (I have the vacuum retard connected too). Now we'll see if these points make the difference. |
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