_Lionelgee_
Posted 30 July 2017 - 11:32 PM
Hello All,
Can someone please let me know what degree of timing advance is recommended for 1977 Red Holden six cylinder 202 cubic inch motor fitted with a manual gearbox?
The engine is fitted with a Bosch-Clone Electronic distributor.
Thank you
Kind Regards
Lionel
Edited by Lionelgee, 30 July 2017 - 11:33 PM.
Technical + Numbers Guru + Moderator
Posted 31 July 2017 - 08:02 AM
It will depend on how much centrifugal advance you have inside the new distributor, the size of the camshaft & how much compression your engine has.
Having said that, if your engine is basically stock & the distributor has similar advance figures to a VC/VH dissy (which is what they came from) then start with 6 to 8 degrees initial timing at idle, with the vacuum line temporarily disconnected.
Listen very careful for pinging under varying rev ranges & engine loads. If you're game, try a few extra degrees. but be conservative & listen for pinging at all times.
If you find that you're not getting anywhere, make certain that your harmonic balancer hasn't slipped & that the zero degree timing mark is indeed TDC. Also get a pro to check your new "Bosch clone" on a distributorgraph to see what it really does have inside.
Dr Terry
_Lionelgee_
Posted 31 July 2017 - 05:57 PM
Hello Dr. Terry,
Thank you for the information Dr Terry.
It is a stock 202 with the first three letters of the engine number XQL. Previous sources based off the full engine number identified it as being made in late 1977.
I decided to fit a HJ carburettor 23-3091 for Manual Transmission. The previous owner had fitted a HR 161 carburettor to the 202.
The only modifications are the electronic distributor and the HJ carburettor. Besides all the stuff being fitted to a Series III Long Wheel Base Land Rover the engine is pretty stock.
Kind Regards
Lionel
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