Can a pict 30/31 carb on a 1600 DP cause overheating?

[skitzoidbugger]

First road test since it was abandoned 1979. After 5ish miles it smells like burning oil and oil pressure drops to zip. Oil light on at idle. I suspect its running hot. All tin is installed except the small ones that clip to the head bolts under the cylinders. All seals are in place also. I am currently plugging up the large round holes in the aft tin where the heater hoses go thru and reading up on all possible causes.
One thread speaks about running too lean and to upsize the carb jet. Could this carb be part of the issue?

Motor is a 1600DP. I mounted a Solex pict 30/31 carburetor, because I had it available.
Thoughts?

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[srfndoc]

Carb model is not the issue but certainly running too lean won't help. Did you check your timing with a timing gun (since your running what looks to be an 009) as you want to make sure its not over 30 degrees of advance all in.

Those tins you mentioned between the heads are important as well.
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[skitzoidbugger]

[srfndoc]

[joe cool]

I think those missing pieces of tin are very important. Without them the cylinders are not being adequately cooled. I would not run without them. It is going to be a pain to install them now but you have got to do it.

[Eric&Barb]

Too lean of jetting can do that. There are three jets that need to work together like a chorus, so just randomly "upping a jet" can result in no improvement or disastrous results.

With an old engine that has sat more than a year or two, one has to expect it to run hot due to polishing out micro corrosion especially in the cylinders.

What weight of oil are you running?

Have you pulled the oil pressure relief plug/s to make sure that is not stuck, or spring/s are not broken?

Any chance that there is mouse or wasps nests inside the tin/shroud.
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[joe cool]

Are you missing these pieces? If so, I think that is much of your overheating problem right there.

[skitzoidbugger]

[skitzoidbugger]

[VWAdam]

My Bus has a 1600 single port with a 30/31 built by Volksbitz on my Bus, SVDA distributor and my Bus has no overheating issues. Even in 100 degree southern heat.
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[spanners]

Check it has a.dual port fan in there. the single port fans often get put back in a dog house, it does what you describe.

[skitzoidbugger]

[Eric&Barb]

Pull fan shroud, pull out the gen/fan out of the shroud, measure between the discs that make up the fan.
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[Clara]

Post a pic of you engine so we can see it. That carb should not make it run hot.

[joe cool]

[Clara]

[skitzoidbugger]

[joe cool]

You’re doing the right thing. Great time to install thermostat flaps (wire them open if you have no thermostat) and “Hoover bit” (if doghouse oil cooler) if you can get those often overlooked items. Your engine will run cooler with these.

[Eric&Barb]

[Clara]

thing to do while engine is out:

might as well replace the oil cooler seals and main seal if it was pre 79
new push rod tube seals.
while you have the intake off, check for holes. Make sure the heat riser is clear. (this is kind of a pain to do)
make sure clutch cable wingnut moves easily.
if fuel sender is bad- replace it
if tranny boots are bad/cracked- replace them.
top gear oil
replace all fuel line if it is from 1979
bleed rear brakes
good idea to make sure it has the thermostat flaps et al.


engine pic?