Ported LIM - Page 5 - 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 05-03-2008, 03:25 AM   #41
Senior Member
Posts like a Turbo
Thread Starter
 
LeSabreUltra's Avatar
 
Join Date: Feb 2007
Location: Alabama
Posts: 494
Thanks: 0
Thanked 0 Times in 0 Posts
LeSabreUltra is on a distinguished road
Default

It'* installed, and I'm definitely impressed considering the amount of time I've been driving around now. It'* late, I do have pics and impressions to share but I'll save them until later when I'm less tired.
.
.
.
LeSabreUltra is offline   Reply With Quote
Old 05-03-2008, 05:40 PM   #42
Senior Member
Posts like a Turbo
Thread Starter
 
LeSabreUltra's Avatar
 
Join Date: Feb 2007
Location: Alabama
Posts: 494
Thanks: 0
Thanked 0 Times in 0 Posts
LeSabreUltra is on a distinguished road
Default

Time to share my impressions. I do have re-install pics, but today is one of those lazy days and I don't feel like uploading them!

I only managed to break two things, a coolant switch and a vacuum tube, for me that'* pretty good!

But other than that, only things changed were the ported LIM and a new 180* thermostat.

First things first, I don't know if its the thermostat or the LIM or what (I think the former) but my transmission shifts SO smooth now...especially at the problem areas like uphill or low throttle 3-4 shifts and TCC engage. They used to clunk into gear, now it'* so smooth! I used to notice that it would be smooth until the engine had been running for a good while (up to high temps) and then it would get clunky. If you don't have a 180, GET ONE! Your transmission and peace of mind will thank you. I was afraid my transmission was wearing out.

Now for the LIM.

There is a noticeable increase in power across the entire band, but particularly at speeds of 2250 rpms or so on up. The car pulls much harder and smoother now, and is quicker to get into power when the throttle is applied.

Last night I passed a slow moving Taurus on a two lane road...I was at about 50 mph when I applied about 3/4 throttle. It HAULED and surprised the crap out of me. Later on the interstate, I applied full throttle at 80 mph and was over 100 before I knew it...very good power.

This morning while showing a friend my newfound power I applied full throttle at 20 mph and shrieked the tires very loudly before traction control kicked in, my LeSabre has never done this before.

Other than that I haven't really been running it hard. No full throttle starts from a stop, I need to keep this car alive and well for a long time!

But you will definitely notice the difference even in the most mundane of every day driving dynamics. It takes hardly any effort to keep up with or exceed even the most speedy of stoplight accelerators (no racing, just the kind of people who like to zip around). It no longer downshifts going uphill at 50 mph with the TC engaged on hills that it used to every single time.

In order of where I noticed the most difference, the list is: midrange, low end, top end. The difference was about the same on the low end as it was on the top, but I ranked low higher since the difference down low will be felt more often during normal driving.

Next, my compliments go to agrazela for his hard work. Once it was installed, I ran my finger along the ports and it felt perfectly in line with the head ports. Glancing down the ports with a light showed no overporting in any of the ports. Also, the coolant plugs to the throttle body are working very well. Even in a heat soaked engine bay, my throttle body is just barely warm, instead of the "too hot to touch" feeling I used to get with it. Keeps my intake temps cooler!

I'll post anything else I can remember and some pics later.
.
.
.
LeSabreUltra is offline   Reply With Quote
Old 05-03-2008, 06:07 PM   #43
BANNED
 
Join Date: Aug 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
banned3800 is on a distinguished road
Default

Glad to hear it... And next time pay attention to the Exhaust at idle... I'll bet you have a slightly deeper grumble...

BTW.... I love my ported Lower as well... Now all I need is the trans to back it up

__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
banned3800 is offline   Reply With Quote
Old 05-03-2008, 07:08 PM   #44
Senior Member
Posts like a Turbo
Thread Starter
 
LeSabreUltra's Avatar
 
Join Date: Feb 2007
Location: Alabama
Posts: 494
Thanks: 0
Thanked 0 Times in 0 Posts
LeSabreUltra is on a distinguished road
Default

Quote:
Originally Posted by jr's3800
Glad to hear it... And next time pay attention to the Exhaust at idle... I'll bet you have a slightly deeper grumble...

BTW.... I love my ported Lower as well... Now all I need is the trans to back it up
You're quite right actually...the exhaust tone is a little deeper. The car seems exactly as you said earlier, a little more growly while under way as well.

Speaking of transmissions, it reminded me of another thing I noticed...

Someone once said that porting the LIM makes the L36 "like it was meant to be from the factory". I couldn't agree more with that. Ever felt like your transmission upshifted at times when it really shouldn't have, that your engine simply wasn't making the power needed to keep the car moving at that engine speed (in a non-ported L36)? For the first time, I actually feel like the transmission shift points are well matched to the car now...no more bogging down going up hills. No more clunky upshifts in the middle of trying to go 50 mph up a steep hill...everything seems much better matched.

I just floored my car twice more taking my dad for a test drive, he was impressed both times. Nearly broke the tires loose at 30 mph, or at least it felt that way. Very snappy.

Speaking of flooring though, I need to stop doing that. I feel guilty as hell each time I do, like I'm killing my car or something.

Something random, oil pressure seems a couple bars on the gauge higher than usual, but I'm going to assume that it'* due to the colder 180* thermostat.
.
.
.
LeSabreUltra is offline   Reply With Quote
Old 05-03-2008, 07:14 PM   #45
BANNED
 
Join Date: Aug 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
banned3800 is on a distinguished road
Default

Yeah as I was going through the mountains of Virginia, and heading into WV, Maryland, PA, New York and on into CT.... I was happy with the intake and surprised that it wasn't a struggle to climb the mountains anymore.. And Overdrive comes on with a vengeance now... I see it shift into Overdrive and see the speedo just keep going...

The 180F does help keep the engine a little cooler... This will keep the oil a littler happier.. And yes the trans will be a little happier as well..

__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
banned3800 is offline   Reply With Quote
Old 05-03-2008, 07:24 PM   #46
Senior Member
Posts like a Turbo
Thread Starter
 
LeSabreUltra's Avatar
 
Join Date: Feb 2007
Location: Alabama
Posts: 494
Thanks: 0
Thanked 0 Times in 0 Posts
LeSabreUltra is on a distinguished road
Default

Quote:
Originally Posted by jr's3800
Yeah as I was going through the mountains of Virginia, and heading into WV, Maryland, PA, New York and on into CT.... I was happy with the intake and surprised that it wasn't a struggle to climb the mountains anymore.. And Overdrive comes on with a vengeance now... I see it shift into Overdrive and see the speedo just keep going...

The 180F does help keep the engine a little cooler... This will keep the oil a littler happier.. And yes the trans will be a little happier as well..
Very true, top gear highway power is a lot better. At 75 down the interstate it seems like I no longer have to plunge down so much on the accelerator to bump it up a couple of mph.

Speaking of intakes though, mine needs help. Seems that my filter is rusting! Just the very bottom part where I guess a little mist gets to it. No water ingestion though, for sure.

It'* just a cheap filter. I'll probably order a K&N RX-4750 within the next few days, maybe it'* wire mesh is made out of stainless steel or something of that nature. Will probably get my car to perform better, too.
.
.
.
LeSabreUltra is offline   Reply With Quote
Old 05-03-2008, 09:10 PM   #47
Senior Member
Posts like a Turbo
Thread Starter
 
LeSabreUltra's Avatar
 
Join Date: Feb 2007
Location: Alabama
Posts: 494
Thanks: 0
Thanked 0 Times in 0 Posts
LeSabreUltra is on a distinguished road
Default

Hmm, this high oil pressure has me a little concerned.

It seems to be running at about 60 psi warmed up, in D and at idle. Around 80-90 psi (more like 80 I think) while underway. Is this a cause for concern? The pressure does not waver, it very closely follows the engine rpm and vehicle speed.

I know it didn't do this before the install. Honestly, it may not have been doing it before today, I can't remember...I just remember looking down after a full throttle run when the engine was warm and seeing it pegged at 80 psi...

Once I get this issue sorted out, I think my biggest restriction now is my intake. Once I find some 3.5 inch pipe and a coupler, I'm going to order some Intense 3.5" tubing and one of their 3.5 inch 9" long K&N filters. I'll make a separate topic for it in a bit.

Forgot to mention, changed the oil out yesterday after the install and a 15 mile drive. Put in Mobil 1 5W-30 and an AC Delco oil filter. I am noticing no problems with engine operations, or any strange noises. Oil looks fresh and clean on the dipstick. Everything is perfect, just the pressure seems a little off.

Actually, upon reading, I'm not entirely sure I should be worried...high oil pressure isn't really a bad thing...is it?

Too many questions in one post. I'll narrow it down to just one: SHOULD I BE CONCERNED?
.
.
.
LeSabreUltra is offline   Reply With Quote
Old 05-04-2008, 02:28 PM   #48
BANNED
 
Join Date: Aug 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
banned3800 is on a distinguished road
Default

I wonder if that has something to do with the Oil pressure sending unit..

Mine hot idles at 35-40 Psi and when cool will easily see 80Psi

__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
banned3800 is offline   Reply With Quote
Old 05-04-2008, 02:40 PM   #49
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

It'* very easy to dislodge a little gunk when doing the LIM replacement. The sender itself is already a very sensitive device. I'd give it time, and put seafoam in your oil about 100 miles before your next oil change. High pressure is far less of a concern than low.
willwren is offline   Reply With Quote
Old 05-04-2008, 03:31 PM   #50
Senior Member
Posts like a Turbo
Thread Starter
 
LeSabreUltra's Avatar
 
Join Date: Feb 2007
Location: Alabama
Posts: 494
Thanks: 0
Thanked 0 Times in 0 Posts
LeSabreUltra is on a distinguished road
Default

I forgot to update this thread, last night when I took it on another drive the oil pressure returned to normal. I think perhaps it could either be a faulty sender, or as willwren said, some gunk that may have lodged temporarily while I floored it.

I will do the seafoam though. Can't hurt. Should I drain some oil before I put it in? And how much should I add, the full botttle?

And just to add, I'm still loving my port and polish. Seems to be getting better each time I drive it even though the 100 miles has long since come and gone. Can't wait to see how much the INTENSE FWI improves it.
.
.
.
LeSabreUltra is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
ported LIM worth it for 96se? the crunge Performance, Brainstorming & Tuning 1 04-25-2008 06:07 PM
Modified UIM Runners & Ported LIM..... PortugalFocus Performance, Brainstorming & Tuning 2 03-08-2008 03:54 PM
Ported LIM plus front PEM test data agrazela Performance, Brainstorming & Tuning 49 05-08-2007 07:04 PM
PICS!! Ported GEN III M90 until spring, then ported GEN V OLBlueEyesBonne Forced Induction 20 10-13-2006 03:55 AM
GEN V LIM in getting ported OLBlueEyesBonne Performance, Brainstorming & Tuning 14 08-10-2006 06:13 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 06:21 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.