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Old 05-01-2012, 10:38 PM   #1
BinaryDriver
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Default tech: EJ20G cam cap bolts Help PLS

So I have a JDM 96 EJ20G....
Rebuilding and torqued down the cap bolts to 14.5lbs to our Spec. Well...one tore off.
Ok. have to replace somehow.
Un-did the rest and ANOTHER tore off....and ALL were stretched.
So obviously the torque settings for the 96 are not similar...
OK. So I have a set of 03 Heads lying around with those "exact" bolts and they are not the same size (or composite if your curious.) So now I have two bolts to extract in my 20G head and 4 more to replace to just get one cam on.
But then the other three cams will be held in at a torque spec I can't find with bolts that I consider generically weak.
Searching threads and Google gave me little to work with.

One thread said that VW had the right bolt but gave no part number.

From 2008 no less.....
I know this engine is considered a somewhat acient build but I need some old-school knowledge. Why? I'm going to run 18lbs on a internally stock 20g in a '03TS and make it a FUN daily driver.
Tek me...
bash if u don't have knowledge..
I really don't care..
Each helps my thread for this type of rebuild.

Thanks in advance.
Binary

P.S. (My realistic goal is reliable +-300whp on budget....in a wagon...sleeper...doable)
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Old 05-01-2012, 11:12 PM   #2
elislider
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I think its 11lbs spec. could be wrong though.

part number: 808106180 (this is from a 96 EJ25D [usdm legacy gt]) for all cam cap bolts
later models used that number^ for the forward cam caps and 10993AA000 for the rear cam caps
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Old 05-02-2012, 12:34 AM   #3
BlackJavaPearl04
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main bolts near the cam gear are 14 the others are roughly half of that....something wrong if your snapping bolts at 14 ftlbs?
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Old 05-02-2012, 12:42 AM   #4
BinaryDriver
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Im not going to post pics, but you have to trust me on the fact that all the bolts were stretched at 14.5 and so much that removing one yielded a break, thus I need two extractions now.
I will remind you that I stated:
JDM EJ20G '96
Completely different bolts from others I have: EJ205
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Old 05-02-2012, 03:03 AM   #5
elislider
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could be they superceded them to a newer style
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Old 05-02-2012, 04:28 AM   #6
BlackJavaPearl04
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Quote:
Originally Posted by BinaryDriver View Post
Im not going to post pics, but you have to trust me on the fact that all the bolts were stretched at 14.5 and so much that removing one yielded a break, thus I need two extractions now.
I will remind you that I stated:
JDM EJ20G '96
Completely different bolts from others I have: EJ205
ok I get what your saying...you'd need to get a FSM and get proper torque specs...this is the only solution otherwise its just speculating and assuming. Two words to search Ken Gilbert....cannot say anymore as the mods are hell bent on acquiring the FSM "properly"
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Old 05-02-2012, 04:40 AM   #7
BlackJavaPearl04
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well i got curious....looks like the pre 97 dohc imprezas were 7 ftlbs for all cam caps. Where as the ej205 are 14 for the mains and 7 for the remaining.
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Old 05-02-2012, 10:38 AM   #8
69subaru360
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Hand tight only on the cam cap bolts. The FSM is wrong. You'll snap them every time trying to torque them.

I've put together over 100 of these and never torqued the cam cap bolts.

The bolts are the same as the 96 legacy EJ25 you can order them at any dealer. They have a shoulder to them, you have to use the factory bolts. If you use hardware store bolts you'll have an oil leak.
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Old 05-02-2012, 01:35 PM   #9
elislider
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Quote:
Originally Posted by 69subaru360 View Post
Hand tight only on the cam cap bolts. The FSM is wrong. You'll snap them every time trying to torque them.

I've put together over 100 of these and never torqued the cam cap bolts.

The bolts are the same as the 96 legacy EJ25 you can order them at any dealer. They have a shoulder to them, you have to use the factory bolts. If you use hardware store bolts you'll have an oil leak.
this sounds accurate to me. listen to him. i put the part numbers above
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Old 05-02-2012, 03:35 PM   #10
BinaryDriver
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Ordered the bolts from subaru today.
Thanks a bunch!
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