SVX Network Forums Live Chat! SVX or Subaru Links Old Lockers Photo Post How-To Documents Message Archive SVX Shop Search |
IRC users: |
#1
|
|||
|
|||
stock camshaft specs
I am having a performance valve job done on my cylinder head and the machinist wants to know the specs of our stock camshafts. I did a little research on the network and there is A LOT of information on camshafts, in fact too much for a novice to be able to decifer what info i really need.
So that being said, what camshaft spec info will my machinist need to complete his job? I was planning on keeping the camshafts stock to avoid reliability issues and having to convert to solid buckets...now that i think about it, is it possible to obtain a more aggressive camshaft without sacrificing too much daily drivability? thanks in advance. |
#2
|
|||
|
|||
Re: stock camshaft specs
Quote:
Inlet opens 2*BTDC, closes 54* ABDC. Lift is 7mm. Exhaust opens 55* BBDC, closes 9* ATDC. Lift is 8mm. There is a cam that has been used before, welded and ground by Delta Cams. It was a modified Inlet cam that increased the lift to 8mm, with a 247* duration. It helped the torque to continue up the revs a bit further. Harvey.
__________________
One Arm Bloke. Tell it like it is! 95 Lsi. Bordeaux Pearl, Aust. RHD.149,000Kls Subaru BBS wheels. 97 Liberty GX Auto sedan. 320,000Kls. 04 Liberty 30R Auto Premium. 92.000kls. |
#3
|
|||
|
|||
Re: stock camshaft specs
Harvey, could you please define the acroynms? (BTDC, ABDC, BBDC and ATDC). Thanks, Chris
|
#4
|
||||
|
||||
Re: stock camshaft specs
BTDC = Before Top Dead Center
ABDC = After Bottom Dead Center BBDC = Before Bottom Dead Center ATDC = After Top Dead Center |
#5
|
|||
|
|||
Re: stock camshaft specs
Quote:
Blue is inlet duration. Yellow is exhaust duration. MOP. Is maximun valve opening point, or Lobe center. Harvey.
__________________
One Arm Bloke. Tell it like it is! 95 Lsi. Bordeaux Pearl, Aust. RHD.149,000Kls Subaru BBS wheels. 97 Liberty GX Auto sedan. 320,000Kls. 04 Liberty 30R Auto Premium. 92.000kls. |
#6
|
|||
|
|||
Re: stock camshaft specs
thanks guys, I'll let pass the info onto my machine shop guy tomorrow!
|
|
|