Why no hybrid L61/LSJ builds? - Page 5 - Cobalt SS Network

2.0L LSJ Performance Tech 205hp Supercharged SS tuner version. 200 lb-ft of torque.

Why no hybrid L61/LSJ builds?

Old 10-15-2013, 12:42 PM
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Originally Posted by bLu04dd View Post
A 2.7 stroker TVS sounds so tempting...perhaps my next build

current purebred LSJ swapped 04 Cavalier here. Timing the trigger wheel to be exact isn't easy but not too bad. Also a thing to note is the crank pulleys are different between the engines. An LSJ cp is flat on the front so the trigger wheel fits nicely. The LE5 and L61 cp's have bumps on the 3 arms that reach out so you have to compensate with washers or something. The good thing is you can just swap pulleys, just keep in mind the L61 only has 5 ribs vs the LE5/LSJ 6 rib pulley (L61 requires you go cut off a rib when using the LSJ belt if you don't swap the cp out).

I cant wait to see what this engine can do tuned with my mods. Jbody by sight, Cobalt by flight! lol

My LE5 came with a 5-rib pulley, my motor came out of a G6 Sedan so that could be the reason. It was identical to the L61 pulley, in fact I am still using it on my setup.




Also, I did a LE5/LSJ with L61 full valvetrain setup a few years ago now, still running strong 3 years later. Still running it on my "improper" external crank sensor setup as Mr.Belvedere called it 3 years ago when I was building it...LOL We are cool tho dude.


Didn't even see this post till now, I never venture into the LSJ subforum often, but if anyone has any questions just shoot me a PM.


Mr.Belvedere: What are you charging for those sleeves? And can I swap them using the GM (Kent-Moore) sleeve puller?
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Old 10-15-2013, 01:10 PM
  #102  
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What would be the CR for lsj rods and pistons in on an l61 crank? Is this possible?
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Old 10-15-2013, 01:46 PM
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yes it is possible as they have the same bore different stroke the comp would be around 9.5

Last edited by mrbelvedere; 10-15-2013 at 01:52 PM.
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Old 10-15-2013, 01:52 PM
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Originally Posted by newt View Post


Also, I did a LE5/LSJ with L61 full valvetrain setup a few years ago now, still running strong 3 years later. Still running it on my "improper" external crank sensor setup as Mr.Belvedere called it 3 years ago when I was building it...LOL We are cool tho dude.

i never disagreed with doing an external crank sensor it was how you secured the wheel to the dampener with just the crank bolt

Last edited by mrbelvedere; 10-21-2013 at 10:32 AM.
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Old 10-15-2013, 04:44 PM
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Originally Posted by mrbelvedere View Post
yes it is possible as they have the same bore different stroke the comp would be around 9.5
would this be a 2.1?
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Old 10-15-2013, 04:45 PM
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no it would not
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Old 10-15-2013, 04:46 PM
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Originally Posted by mrbelvedere View Post
no it would not
just saw your message! thanks.
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Old 10-15-2013, 04:47 PM
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word
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Old 10-21-2013, 06:29 AM
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Originally Posted by mrbelvedere View Post
you cant crack the flood gate door and not expect a flood so spill more superfly

GDS
I am running a 2.5 hybrid ecotec, basically darton sleeves bored out to 90mm, JE pistons, carrillo 2.4 rods, 2.4 crank in a saab/LSJ block, running throttle bodies

Build thread from page 30.....

vx220 major rebuild | Page 30 | Z22SE.co.uk
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Old 10-21-2013, 08:11 AM
  #110  
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Originally Posted by vocky View Post

I am running a 2.5 hybrid ecotec, basically darton sleeves bored out to 90mm, JE pistons, carrillo 2.4 rods, 2.4 crank in a saab/LSJ block, running throttle bodies

Build thread from page 30.....

vx220 major rebuild | Page 30 | Z22SE.co.uk
Damn. Just read through some of that. I like that your oil filter cap is metal. Where can i find one? Lol
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Old 10-21-2013, 09:09 AM
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Ya i read the whole thing.

Amazing work. Im doing a 2.4 lsj with a le5 crank. U really think the crank will handle 750bhp??
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Old 10-21-2013, 11:32 AM
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Originally Posted by Tjolley View Post
Ya i read the whole thing.

Amazing work. Im doing a 2.4 lsj with a le5 crank. U really think the crank will handle 750bhp??
I doubt it, it was a joke aimed at a friend but I forgot to edit it

We have lots of banter between itb's and sc over here, the sc boys hate the fact the itb's are quicker
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Old 10-21-2013, 12:04 PM
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What TBs are you using? Haven't had a chance to read the whole thread yet.
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Old 10-21-2013, 01:10 PM
  #114  
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Originally Posted by armcclure View Post
What TBs are you using? Haven't had a chance to read the whole thread yet.
i just found these the other day, but look up kinsler itbs
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Old 08-20-2015, 06:32 PM
  #115  
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Originally Posted by LS FUN View Post
There actually is a lot more people out there then you think. I got a LAP block with lsj internals and lsj valves and springs. Along with a custom turbo kit with a presicion 58/57
So I have an 07 2.2 liter that I just put lsj rods and Pistons in and the top of the piston sticks out of the bore 4mm or so. What gives?
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Old 08-20-2015, 08:48 PM
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You cant do that lol. The piston is too talk becsuse the lsj has a shorter stroke.
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Old 08-20-2015, 11:04 PM
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Originally Posted by barthello View Post
So I have an 07 2.2 liter that I just put lsj rods and Pistons in and the top of the piston sticks out of the bore 4mm or so. What gives?
the 2.2 has a lower compression height on the piston and a longer rod(.075 longer then the lsj i believe) and stroke i dont know how far the piston sticks out of the bore on a 2.2

the lsj has a shorter stroke and rod then the 2.2 and a higher compression height on the piston the piston on a lsj sticks out of the bore .050 to .060

you need to get an accurate measurement of how far the piston is sticking out of the bore it may not be as far as it looks because 4mm is .156 and with the head gasket having a compressed thicknes of .027 you would have to get a custom head gasket made by cometic because the piston may hit the head
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Old 08-22-2015, 12:25 AM
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Originally Posted by mrbelvedere View Post
the 2.2 has a lower compression height on the piston and a longer rod(.075 longer then the lsj i believe) and stroke i dont know how far the piston sticks out of the bore on a 2.2

the lsj has a shorter stroke and rod then the 2.2 and a higher compression height on the piston the piston on a lsj sticks out of the bore .050 to .060

you need to get an accurate measurement of how far the piston is sticking out of the bore it may not be as far as it looks because 4mm is .156 and with the head gasket having a compressed thicknes of .027 you would have to get a custom head gasket made by cometic because the piston may hit the head
Or run an lsj crank, right? Anyone got one that they are looking to part with? I can still use the f23 getrag right?
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Old 08-22-2015, 12:31 AM
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Lsj crank will not work the reluctor is different for crank sensor and the flywheel is different too.
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Old 08-22-2015, 10:18 PM
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Originally Posted by Slowbalt2000 View Post
Lsj crank will not work the reluctor is different for crank sensor and the flywheel is different too.
It's an 07 l61 going into an 05 Saturn ion four door. I have a complete wiring harness with Ecu. I know the pin out is going to get re-pinned to the bcm. So who makes custom Pistons? I need a piston with a lower compression height. Or eagle rods and wiseco Pistons. If I run the supercharger and a 3.1 pulley how much boost will that be and can the factory piston handle it? Do I absolutely need 60# injectors or will the stock lsj injectors be adequate. Trying to do a (no) budget build without my wife getting mad at me.
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Old 08-23-2015, 06:33 PM
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yes you will need 60s get a thicker cometic head gasket
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Old 08-23-2015, 09:28 PM
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You can run a stock l61 engine on a 3.1 m62 no problem as long as the tune is solid. I wouldnt mess with trying to run a thicker head gasket to compensate for running the wrong pistons and rods.
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Old 08-23-2015, 11:12 PM
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Originally Posted by mrbelvedere View Post
yes you will need 60s get a thicker cometic head gasket
The Pistons literally protrude 3mm out of the block. Do lsj Pistons have Saab on them? Maybe I don't have the correct ones! I bought them on eBay, so this is a possibility. I will post picures the next time I'm working on the engine.
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Old 08-23-2015, 11:13 PM
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Lsjs say saab all over them
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Old 08-23-2015, 11:18 PM
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Originally Posted by Slowbalt2000 View Post
You can run a stock l61 engine on a 3.1 m62 no problem as long as the tune is solid. I wouldnt mess with trying to run a thicker head gasket to compensate for running the wrong pistons and rods.
I would really like to purchase a set of Diamond Pistons and eagle rods. Need funds though. $600 bucks on eBay, lol! Would much rather buy else where.
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