And OF COURSE your going to have an install thread with photos.....RIGHT?? 
Just got Renegade # 0009
Safety Car
Joined: Oct 2008
Posts: 4,689
Likes: 4
From: Yucaipa CA
Unless you need the stock one for smog, I'd say turn it in for scrap metal. The L-83 is 9:1 stock. I'm sure some extra CR would help, but I don't think I'd want to go 10:! just so that I can keep running regular 
I'm currently looking into different heads. I'd love to run vortec heads so right now I'm searching for a junker or 2 of those that I can chop up to see if there is a way to drill them for EGR - gotta pass smog!
If that fails, there are some other options too. Summit has a pair of cheap cast iron heads for $619 a pair that are large chamber and 2.02/1.60's, but beyond that I'd probably go Edelbrock Performers or small AFR's/TrickFlows
I'm currently looking into different heads. I'd love to run vortec heads so right now I'm searching for a junker or 2 of those that I can chop up to see if there is a way to drill them for EGR - gotta pass smog!
If that fails, there are some other options too. Summit has a pair of cheap cast iron heads for $619 a pair that are large chamber and 2.02/1.60's, but beyond that I'd probably go Edelbrock Performers or small AFR's/TrickFlows
Thread Starter
Le Mans Master
Joined: Nov 2009
Posts: 6,882
Likes: 235
From: Bangkok, Thailand
Not sure it was that high till they got the to LT-1 with the reverse flow cooling - pretty sure the L-98's were 9.5:1 and that's with aluminum heads which dissipate heat better than cast iron so they are less prone to ping. They also had a much better computer than the L-83 has. The PROM in the L-83 is only 32K and the L-98 PROM is 128K I believe - and it is a faster computer as well.
There are alternatives for the L-83 computer, but I'm trying to stick with as much stock equipment as possible.
The other thing to remember is that an engine with lower compression can use a more aggressive timing map without pinging. In general this is better than a higher compression engine having knock problems and then having the computer pull back the timing - which you won't know is happening unless you're monitoring the knock system.
Small changes in compression don't make huge power differences like some people think. Sure, changing from 8:1 to 9:1 will certainly help, but changing from 9:1 to 10:1 is not a similiar change - in other words, it's diminishing returns as you run into cylinder pressure limits, engine knock, etc. I'd rather gain 40 hp from a great set of heads than 10 hp from a point in compression that causes ping and makes me back off the timing.
There are alternatives for the L-83 computer, but I'm trying to stick with as much stock equipment as possible.
The other thing to remember is that an engine with lower compression can use a more aggressive timing map without pinging. In general this is better than a higher compression engine having knock problems and then having the computer pull back the timing - which you won't know is happening unless you're monitoring the knock system.
Small changes in compression don't make huge power differences like some people think. Sure, changing from 8:1 to 9:1 will certainly help, but changing from 9:1 to 10:1 is not a similiar change - in other words, it's diminishing returns as you run into cylinder pressure limits, engine knock, etc. I'd rather gain 40 hp from a great set of heads than 10 hp from a point in compression that causes ping and makes me back off the timing.
Instructor
Joined: May 2008
Posts: 234
Likes: 1
From: Midland Texas
TPIS has a egr set up that might work for your Vortec head
T.P.I.S. has a egr for there mini ram that looks generic enough to bolt to your Renegade then you just run a pipe to a manifold here is a link
http://www.tpis.com/parts/view/55
http://www.tpis.com/parts/view/55
Last edited by C4happy; Oct 8, 2010 at 04:35 PM. Reason: type error
Thread Starter
Le Mans Master
Joined: Nov 2009
Posts: 6,882
Likes: 235
From: Bangkok, Thailand
T.P.I.S. has a egr for there mini ram that looks generic enough to bolt to your Renegade then you just run a pipe to a manifold here is a link
http://www.tpis.com/parts/view/55
http://www.tpis.com/parts/view/55
Yep, but that's a major red flag for the smog guy
Safety Car
Joined: Oct 2008
Posts: 4,689
Likes: 4
From: Yucaipa CA
I think you have to stay in your own county for a smog test. Once tried to smog my camaro in redding california on way down from seattle and it wouldn't go through. but that was like 400 miles or so from where I lived.
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Safety Car
Joined: Nov 2005
Posts: 3,532
Likes: 1,185
From: Arizona - If you don’t know CFI, STOP proliferating the myths around it...
Do they really look that close in CA at what you have? We have the same emissions stardard in AZ as you and they not only don't look, but wouldn't know if it was right or not.
What you could do is put a small blank off plate under the EGR with gasket and bolt it back on and nobody would know that difference, it should still pass. Just a thought if you want to go the Vortec route.
What you could do is put a small blank off plate under the EGR with gasket and bolt it back on and nobody would know that difference, it should still pass. Just a thought if you want to go the Vortec route.
Safety Car
Joined: Jan 2004
Posts: 3,759
Likes: 8
T.P.I.S. has a egr for there mini ram that looks generic enough to bolt to your Renegade then you just run a pipe to a manifold here is a link
http://www.tpis.com/parts/view/55
http://www.tpis.com/parts/view/55
The EGR they have in the pic looks like it is one of those aftermarket Positive EGR's. As you want a Negative EGR, and I believe AC Delco is the only way to get one.
Thread Starter
Le Mans Master
Joined: Nov 2009
Posts: 6,882
Likes: 235
From: Bangkok, Thailand
Do they really look that close in CA at what you have? We have the same emissions stardard in AZ as you and they not only don't look, but wouldn't know if it was right or not.
What you could do is put a small blank off plate under the EGR with gasket and bolt it back on and nobody would know that difference, it should still pass. Just a thought if you want to go the Vortec route.
What you could do is put a small blank off plate under the EGR with gasket and bolt it back on and nobody would know that difference, it should still pass. Just a thought if you want to go the Vortec route.
Melting Slicks
Joined: Dec 2008
Posts: 2,772
Likes: 64
From: Mystic CT
What a waste of energy the numbers it blows out the pipe are what they are. i am so glad i do not live in a **** retentive state like CA.. sigh.. I thought CT was bad sure glad i live on the east side hurricanes and all are just fine compared tonthis news..
Safety Car
Joined: Nov 2005
Posts: 3,532
Likes: 1,185
From: Arizona - If you don’t know CFI, STOP proliferating the myths around it...
