|
|
04-20-2011
Guys, got a buddy on another forum. TMK he doesn't frequent here much. In my experience/reading he's about to make a big mistake and I've possilbly talked him out of it.
L26 block
L67 heads (stock)
105# springs, retainers etc
ZZP SS IC
Gen 3 M90
TOG's
Injectors - stock
HPT for tuning
He's talking about running a 3.2" pulley. Personally I'm thinking that's too small. Trying to get him up to at least a 3.8" stocker to start off.
Thoughts?
04-20-2011
He should be okay with a 3.2-3.3 range IF he gets injectors and a rewire. The l67's will max on a 3.4 over 105 percent IDC. Wideband will be his best friend here
FWIW I run a 3.25 on a l36 block with headers,SSIC and ported blower with larger injectors and a rewire and I have 0KR to maybe a blip of KR on a 11.8 afr with 18 WOT timing.
http://www.streetfire.net/video/2001...ynp_208097.htm
04-20-2011
After seeing the L26 rods.... I'd say thats his first mistake
04-20-2011
l26 rods>l36 rods.
http://www.streetfire.net/video/2001...ynp_208097.htm
04-20-2011
They's smaller?
04-20-2011
l26's are powder coated l36 isnt. How often you hear of either breaking a rod?
http://www.streetfire.net/video/2001...ynp_208097.htm
04-20-2011
powdered does not equal powder coated.
i'd rather have cast than powdered.
04-20-2011
L32 rods are stonger than L67
L36 are stronger than L26...
Not sure how that worked in GM's head.
04-20-2011
Crap.. yeah S1X cam. Missed that.
Still ... a top swap on a 3.2?
04-20-2011
with the cam, sure, but that is definitely not where i would start just for safety sake.
04-20-2011
3.4 or larger?
04-20-2011
Lemme give ya a little more backstory. He pulled his trans to change a fues. Long funny story about how not to diagnose something. Anyhow he changed the converter and flex.
Blew the motor in about 4-5 months. Guy drove a car to his house, then he drove that car for a week to evaluate the motor. Pulled it and put it with his mods into his car. That motor blew in under a week. He measured runout on the flex at .030" and said it's out of spec and likely caused both motors.
I'm not really buying into that.
04-20-2011
Don't give him a blower.................
04-20-2011
yeah, i wouldnt run a 3.2 on a topswapped motor. 3.4 should be enough with his mods and a good tune.
04-20-2011
4.0
04-20-2011
Silver Dinner Platter pulley mod.
04-20-2011
Pretty sure that the L26 and L32 rods are stronger. I have never heard of someone saying they were wanting a L36 block over a L26 block. I think in some years of the L32 and L26 they didn't have the same rods but if its a later model they do.
I was wondering why he would do the springs without anything else. I guess he could start with a 3.2 and a tuner and see if he was getting any knock. If he is smart and doesn't go WOT on the first pull.
"L26 Naturally Aspirated
The L26 is the Series III version of the 3800. It is still a 3.8 L (231 cu in) design. Compression remains at 9.4:1 as with previous L36's, but the aluminum upper intake (2004+) and stronger connecting rods (2005+) are the primary physical changes. The powdered metal connecting rods were meant to be introduced in 2004 along with the L32's, but the GM plant in Bay City, Michigan that supplies the Flint, Michigan plant could not achieve the desired production dates in time for that engine year."
04-20-2011
L26 rods are apparently much weaker than any other rod for a series II or III.
04-20-2011
I wouldn't worry about the rods in a s/c build, but there are multiple L26 turbo builds now that have had rods break. Never had a problem with the L36 rods, but someone has also stated the L26 rods are cheaper to purchase than L36 rods if you want to check. Why would GM want to make a stronger N/A 3.8L, they just want to make it cheaper.
Here is a very good thread on the L26 subject, however for the s/c crowd, you can't beat the price these L26's are going for these days:
ClubGP Message Forum troubleshooting
Just read all the posts about half way down on the first page, look at the bearings and the broken rod cross seciton.
| « Previous Thread | Next Thread » |
| Tags for this Thread |
| Bookmarks |
Bookmarks |
