I am rebuilding an engine
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.
Which Head do I use for Rebuild
Started by
_LoneOranger_
, Aug 28 2006 04:44 PM
10 replies to this topic
#2
_doublin gtr_
_doublin gtr_
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Posted 28 August 2006 - 04:48 PM
non of them you need 8211930 for lj gtr
hope this helps
hope this helps
#3
_LoneOranger_
_LoneOranger_
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Posted 28 August 2006 - 05:15 PM
Ah hah,
Can you tell me what these heads are for then?
John.
Can you tell me what these heads are for then?
John.
#4
_doublin gtr_
_doublin gtr_
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Posted 28 August 2006 - 05:55 PM
sorry if not gtr or xu1 i have no idea 
#5
Dr Terry
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Posted 28 August 2006 - 05:56 PM
Hi Guys.
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.
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_
_doublin gtr_
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Posted 28 August 2006 - 06:12 PM
sorry i was dislexik lol what i ment was 2811930
sorry for the confusion
sorry for the confusion
Edited by doublin gtr, 28 August 2006 - 06:13 PM.
#7
makka
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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_
_doublin gtr_
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Posted 28 August 2006 - 06:36 PM
standard 202 head
dr terry while on the subject what dose the H & the L on the heads
stand for
dr terry while on the subject what dose the H & the L on the heads
stand for
#10
_doublin gtr_
_doublin gtr_
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Posted 28 August 2006 - 08:28 PM
head part no is the same
short motor part no is different for hi and low comp
short motor part no is different for hi and low comp
#11
_LoneOranger_
_LoneOranger_
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Posted 29 August 2006 - 12:35 AM
Thanks for all this info,
I will check the production date of the block and see if I can get a matching head.
John.
I will check the production date of the block and see if I can get a matching head.
John.
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