Big 914 that will not idle, Idle Issue |
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Big 914 that will not idle, Idle Issue |
joeannwh8 |
Aug 22 2019, 03:40 PM
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#21
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Newbie Group: Members Posts: 8 Joined: 22-August 19 From: Santa Clarita Member No.: 23,398 Region Association: Southern California |
I have a 72 914 that I have been working on forever, started a rebuild 15 years ago. A local machinist help me out and somehow the engine that I thought was a little bigger then 2.1L, I now calculate the size at 2366 cc (103mm x 71mm)! It has an electronic vacuum advance distributor and Solex H32/34 PD513 carbs, compression is 150 psi plus or minus 2 psi all around. Engine starts instantly warm or cold, rev's sluggishly but will quickly get to 6000 rpm easily. The issue is it will not idle below 2200 rpm.
What have I missed? |
Shivers |
Sep 1 2021, 07:13 AM
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#22
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Senior Member Group: Members Posts: 2,434 Joined: 19-October 20 From: La Quinta, CA Member No.: 24,781 Region Association: Southern California |
In the old days it was 10 lbs oil pressure for every 1000 rpm's. Running at 7000 rpm's you wanted 70 lbs. I'm old like these rules so I stick to them. But, with all the advancements in oil it's not so clear any more what is right for these type 4's. If you want to run a cooler more volume will help, so stick with the 30. The pressure should be controlled by the spring in the bypass valve
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