Which Head do I use for Rebuild
#1 _LoneOranger_
Posted 28 August 2006 - 04:44 PM
I have 3 cylinder heads and am not sure which one I should use.
Engine is a 9/13 JL GTR being rebuilt as standard.
Not sure which one came off this engine originally.
Heads are
7429477
G126
7420109
E134
9937269
(pretty sure this is off a blue motor)
Any help would be appreciated.
John.
#2 _doublin gtr_
Posted 28 August 2006 - 04:48 PM
hope this helps
#3 _LoneOranger_
Posted 28 August 2006 - 05:15 PM
Can you tell me what these heads are for then?
John.
#4 _doublin gtr_
Posted 28 August 2006 - 05:55 PM
#5
Posted 28 August 2006 - 05:56 PM
I think all of those heads are 'small chamber' heads. They are not correct for an LJ GTR 202. If you fit them, your comp ratio will be way too high for a stock streeter.
The 1st head is a std 161, the 2nd is std 149 & I think the last one is a late red (ADR27A) 173. I don't have that exact number recorded, but it is only a few digits away from a late red 202.
Dr Terry.
#6 _doublin gtr_
Posted 28 August 2006 - 06:12 PM
sorry for the confusion
Edited by doublin gtr, 28 August 2006 - 06:13 PM.
#7
Posted 28 August 2006 - 06:21 PM
I had 1 of those heads, till i attacked it with the die grinder for something to do! they are a dime a dozen, so you shouldnt have any trouble finding 1. i might even have another at homesorry i was dislexik lol what i ment was 2811930
sorry for the confusion
#8 _doublin gtr_
Posted 28 August 2006 - 06:36 PM
dr terry while on the subject what dose the H & the L on the heads
stand for
#9 _Torana/Fan_
Posted 28 August 2006 - 08:24 PM
#10 _doublin gtr_
Posted 28 August 2006 - 08:28 PM
short motor part no is different for hi and low comp
#11 _LoneOranger_
Posted 29 August 2006 - 12:35 AM
I will check the production date of the block and see if I can get a matching head.
John.
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