"Temporary" engine

andy669 · 05-18-2005, 08:48 AM

.105 on the intake should be fine. Just make sure you have your stuff setup right. Where did you install the cam? You could back it up a couple few degrees and gain p~v on the intake, but you will lose a little on the exhaust.

Andy

~The Jester~ · 05-18-2005, 09:28 AM

I installed the cam straight up at 0*, centerline is ground at 108.5 and it's actually at 107.8

I thought about the 4* retard/advance thing, but wasn't sure which way to go, if any, so I left it alone. Still easy enough to change, don't have the front cover on yet.

andy669 · 05-18-2005, 01:43 PM

Depending on how much compression you have, I'd tell you to advance that thing, but youre kinda out of room on the intake side. In which case I'd just leave it alone.

Andy

~The Jester~ · 05-18-2005, 06:55 PM

DYNAMIC compression is guestimated at 11.43:1 Static is up around 13.2:1 so I see what you mean there.

Ran some tests on my desktop dyno, and with 1.7 rockers, and the cam retarted 4* is when it made the best power. 579HP at 7000. With the 1.6 rockers, and the cam at 0*, it's making 573HP at 7000.

So Me thinks due to the close tolerances on those pistons, and we're only talking about 6 HP, I'm gonna go straight up on the cam, and 1.6 rockers.

Sound logical?

Here she is all "mocked" up:

05-18-2005, 08:48 AM	#1
andy669 Registered Member Join Date: Jan 2001 Location: Moline Il Posts: 901	Re: "Temporary" engine .105 on the intake should be fine. Just make sure you have your stuff setup right. Where did you install the cam? You could back it up a couple few degrees and gain p~v on the intake, but you will lose a little on the exhaust. Andy __________________ 88 coupe 91 LX NMRA Pure Street 5120

05-18-2005, 09:28 AM	#2
~The Jester~ Rat Killer Join Date: Aug 2002 Location: Cold ass Ohio Posts: 1,143	Re: "Temporary" engine I installed the cam straight up at 0, centerline is ground at 108.5 and it's actually at 107.8 I thought about the 4 retard/advance thing, but wasn't sure which way to go, if any, so I left it alone. Still easy enough to change, don't have the front cover on yet. __________________ d-Con Racing "Nothing fancy, just 347 inches of RAT POISON!" MICE need not apply.....

05-18-2005, 01:43 PM	#3
andy669 Registered Member Join Date: Jan 2001 Location: Moline Il Posts: 901	Re: "Temporary" engine Depending on how much compression you have, I'd tell you to advance that thing, but youre kinda out of room on the intake side. In which case I'd just leave it alone. Andy __________________ 88 coupe 91 LX NMRA Pure Street 5120

05-18-2005, 06:55 PM	#4
~The Jester~ Rat Killer Join Date: Aug 2002 Location: Cold ass Ohio Posts: 1,143	Re: "Temporary" engine DYNAMIC compression is guestimated at 11.43:1 Static is up around 13.2:1 so I see what you mean there. Ran some tests on my desktop dyno, and with 1.7 rockers, and the cam retarted 4* is when it made the best power. 579HP at 7000. With the 1.6 rockers, and the cam at 0, it's making 573HP at 7000. So Me thinks due to the close tolerances on those pistons, and we're only talking about 6 HP, I'm gonna go straight up on the cam, and 1.6 rockers. Sound logical? Here she is all "mocked" up: __________________ d-Con Racing "Nothing fancy, just 347 inches of RAT POISON!" MICE need not apply..... Last edited by ~The Jester~; 05-18-2005 at 09:03 PM..*

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