Brainstorming for an L27 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

Reply
 
 
 
Thread Tools Search this Thread
Old 09-29-2007, 08:53 PM   #1
Senior Member
True Car Nut
Thread Starter
 
Join Date: Mar 2006
Location: Virginia
Posts: 2,904
Thanks: 0
Thanked 0 Times in 0 Posts
93-SSE is on a distinguished road
Default Brainstorming for an L27

Brainstorming for down the road.

Well I haven't looked into much yet because I didn't plan on mod-ing farther with this engine. But I figure she'* got quite a bit of left left in 'er. So, what are my next options performance wise for the Series 1 L27. I know there isn't as much or very little compared to the Series II but what'* out there for me.

I do plan on switching to a FWI in the future.
93-SSE is offline   Reply With Quote
Old 09-29-2007, 09:07 PM   #2
Senior Member
Certified Car Nut
 
Join Date: Oct 2003
Posts: 19,756
Thanks: 0
Thanked 0 Times in 0 Posts
1993 SLE is on a distinguished road
Default

LIM Porting

Port Matched EM'*

Ported TB

1.8 Rockers are available, as well as a cam

and there is more...
1993 SLE is offline   Reply With Quote
Old 09-29-2007, 09:38 PM   #3
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

Everything for the S2 is available for the S1.

What'* your budget?
willwren is offline   Reply With Quote
Old 09-30-2007, 11:01 AM   #4
Senior Member
True Car Nut
Thread Starter
 
Join Date: Mar 2006
Location: Virginia
Posts: 2,904
Thanks: 0
Thanked 0 Times in 0 Posts
93-SSE is on a distinguished road
Default

Wow. I thought there was a difference between the series 1 and 2 and most of it didn't work. Awesome.

Budget, right now nothing...but generaly I generaly have 200 - 400-ish to play with(lately I have had tuition and books to pay on my own, and i just shelled out roughly 160 on the muffler and installation, Tires are next as I need them badly. I try to save it but alot goes into gas( I have made a few road trips to univierities around Va. to visit freinds. But I'm in school now and things are starting to settle down and I'm back in work (Only about 6-8 hours a week).

So right now I guess I'm just trying to make a plan, looking at around the winter holiday to start something.
93-SSE is offline   Reply With Quote
Old 09-30-2007, 11:16 AM   #5
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

Very little 'crosses over'. I think you're misunderstanding.

Nearly everything for the S2 can be had for the S1. It'* just a little harder to find.
willwren is offline   Reply With Quote
Old 09-30-2007, 11:29 AM   #6
Senior Member
True Car Nut
Thread Starter
 
Join Date: Mar 2006
Location: Virginia
Posts: 2,904
Thanks: 0
Thanked 0 Times in 0 Posts
93-SSE is on a distinguished road
Default

Oh, ok. Well still, I didn't know there was that much available for the Series 1.

Another way to look at this is my goal for next summer is to break into mid 15'*. Which probably isn't that hard, I'm at 16.27 as of friday night.
93-SSE is offline   Reply With Quote
Old 09-30-2007, 11:34 AM   #7
Senior Member
True Car Nut
 
Join Date: Aug 2004
Location: In your garage, swipin' da lug nutz
Posts: 3,067
Thanks: 0
Thanked 0 Times in 0 Posts
sandrock is on a distinguished road
Default

I'm working on P&P an L27 lower intake, along with smooth the runners. The runners are rough-cast and have much material that can be removed.

I have also found that S1'* have quite a few casting flash points in the coolant ports. Knocking these out won't increase horsepower any, but will open up flow in the cooling circuit slightly.
sandrock is offline   Reply With Quote
Old 09-30-2007, 11:40 AM   #8
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

That'* a very tall order. Mid 15'* in an L27, that is.

At WCBF '04 with very mild mods, I ran a 15.6 at Woodburn, and dj2005 ran a 16.6. Granted it was very hot, and most people were running 1/2 second slow that year because of it (others at the track besides us), but your goal is 92/93 SSEi territory. That'* going to be a bit more than 200-400 bucks.
willwren is offline   Reply With Quote
Old 09-30-2007, 01:40 PM   #9
Senior Member
True Car Nut
Thread Starter
 
Join Date: Mar 2006
Location: Virginia
Posts: 2,904
Thanks: 0
Thanked 0 Times in 0 Posts
93-SSE is on a distinguished road
Default

Well maybe we'll delay that goal a bit, more of an overall goal. Does breaking into 15.9s fit the budget a bit better?
93-SSE is offline   Reply With Quote
Old 09-30-2007, 01:59 PM   #10
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

Ok, it'* hard to say, because nobody has really modded an L27 on this Forum aside from the basic bolt-on'*.

My suggestion based on what I've learned on the Series 1 in the last couple years:

1. Fix the EM cracks, reinstall with gaskets. FREE if you have a friend with a welder
2. Port-match the LIM ports to the cylinder heads (don't match to the gaskets). FREE
3. http://www.jetchip.com/products.asp?...&model=591#591
4. GOOD CAI. Shield yours very well. Nearly FREE
5. High-flow Cat. It'll do more for you than that muffler, and you'll need it for this:
6. 1.8 YT rockers. Keep stock pushrods and springs.

Much of your car'* performance is your tires and you. You could shave 1-2 tenths in the car'* present form depending on those two things.

If you can shave a tenth in it'* present form, the above list might get you to 15.6 to 15.7. VERY noticeable in the seat of the pants.

Not including gaskets, you'll be in $550 for the PCM and rockers.
willwren is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Brainstorming here...about a L67 Swap PRD2BDF Performance, Brainstorming & Tuning 9 09-20-2006 02:17 PM
Headlight Washer bottle Brainstorming 1993 SLE Performance, Brainstorming & Tuning 20 05-19-2006 02:20 PM
Pure "Brainstorming".... MOS95B Performance, Brainstorming & Tuning 15 08-11-2005 10:53 PM
Brainstorming..... Storage & Battery Drainage Problem Merlin 91/97 Everything Electrical & Electronic 13 12-09-2004 07:19 PM
Another L27 Jseabert update willwren 1992-1999 2 01-05-2003 09:54 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 10:04 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.