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April 21, 2021, 12:00:50 AM

Temperatures

This is a discussion for the topic Temperatures on the board Beach Buggy Engine and Exhaust Help.

Author Topic: Temperatures  (Read 427 times)

this user is offline Big GP

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on: May 20, 2017, 03:55:23 PM
Bit of advice from the gurus please

I've had a problem with No.1 cylinder where it wasn't getting hot. Found that it was the idle jet blocked so cleared this through and now it gets hot.

So I thought I'd measure the temperature of all cylinders by use of a hand held infra red temperature gauge.

I only idled the engine until it reached full temperature

The results are

1. 134c
2. 114c
3. 71c
4. 118c

I'm happy with 1,2&4 but 3 seems low. I took the temperature from the exhaust pipe immediately after it left the head.

The engine seems to be running right and idles perfectly.

Any thoughts on this?


this user is offline snoopy

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Reply #1 on: May 20, 2017, 04:01:21 PM
Strange one, you could try swapping 3 and 4 plugs over and recheck it.


this user is offline Manxdavid

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Reply #2 on: May 20, 2017, 07:01:11 PM
Didn't VW retard the timing on #3 cylinder on some distributors so they'd run cooler to try to stop them dropping valves?
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this user is offline farmer rob

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Reply #3 on: May 20, 2017, 08:02:00 PM
If you have a pair of twin choke carbs, you can expect this unless they have the extra air bypass screws set it properly. this is because the four throttle butterfly flaps, never fit the same in the carburettor bores so each choke on the carb is letting through slightly different amounts of air ;-)up

Rob


this user is offline Big GP

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Reply #4 on: May 20, 2017, 09:55:30 PM
Do I take it as nothing to worry about then?


this user is offline farmer rob

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Reply #5 on: May 20, 2017, 10:07:16 PM
I wouldn't worry about it, if it starts, ticks over and runs alright. If you run Hadron carbs, they almost tick-over on two cylinders, you can put your hands on number 1 and 3 cylinder exhausts but rev them and they run on 4 cylinders and the exhausts get hot fast  ;-)up

Rob


this user is offline pepsi81

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Reply #6 on: May 20, 2017, 10:11:50 PM


I can vouch for the Kadron issue. Rob proved it! Not caused me any problems  ;-)up

Paul