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Thread: Exclusive Ultimate Hybrid Answers

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    Exclusive Ultimate Hybrid Answers

    Well a lot of you may have noticed that Ive been not responding in many of the "can I do ........" threads. This was because Ive had a lot of bits and pieces floating around lately and was in the midst of several hybrid projects at once, all of which yeild highly sought after answers to questions asked very often. Ive got some pics that Ill need to email to Adam or someone so they can post them for me since my internet access situation sucksright now.

    I'll try to answer any questions posed by you guys in this thread but I hope that most of the common ones will be taken care of in this post.

    Injectors: Yes you can swap injectors amongst the EFI engines. the SIDI engine(LNF) is unique, requires its own head, pistons and ECM

    Camshafts: This is covered in a cam sheet offered by GM. Its been posted here before, and not a common question

    Cranks: Yes you can swap cranks between ALL ECO's. HOWEVER, you need to use rods and pistons that match the crank your planning on using, also of note is that all ECO's except 00-06 L61's use a 58x crank trigger, and WILL NOT WORK with the stock ECM in any 00-06 L61

    Valves: Yes, though there seems to be some confusion here you can swap valves to your hearts content and you can get some good(though expensive) results. L42, L61, LE5 and LAT all use the same 35.1mm carbon steel intake valves, and 30.1mm stainless steel exhaust valves. The LSJ, LK9 and LNF all use the sexy inconell intake valves, and sodium filled stainless exhaust valves. YES THEY ARE THE SAME 35.1mm and 30.1mm SIZES AS THE L61 AND ALL OTHER ECO's You can put LSJ valves in an L61, no mods at all.(cost is the only sticky point as they list for $33/ea for exhaust and $66/ea for intake or $792, however you should be able to get them MUCH cheaper than that)

    And now for what everyone really wants to know.

    HEADS: or most specifically a 2.0LSJ/LK9 or L61 head on the 2.4L LE5 block. YES you CAN put a non VVT head on the 2.4L block. Its a simple bolt on deal and only requires the use of the LE5 headgasket no matter what head you use. YES YOU CAN MAKE AN L61 or LSJ HEADED 2.4L LE5 WITH NO MODS

    However you cant put this combo in an 00-06 L61 car with the stock ECM because of the crank issue. This would however be a rocking mod for a tired LSJ car. Or anyone who is unafraid to run standalone or modify an 07 L61 car.
    Last edited by NJHK; 04-10-2007 at 12:31 AM.
    I know stuff about ECOTECS

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    all hail the ecotec god! You sir, are just awesome for this site

    So kiss my ass.
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    good post man
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    This will want a lot of 2.4L guys to have a 2.2L Patriot head now. what about the spark plug setup?
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    Yeah!!!



    If you were premium you could see this...


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    This will want a lot of 2.4L guys to have a 2.2L Patriot head now. what about the spark plug setup?
    D Rock Z75 Quoted Post
    In order to run the stock le5 ignition you'll need to use an 07 L61 head. Which means you need to buy a head and send it to patriot or your machinist to be ported. A lil bit more expensive but worth it for the 07 L61 guys who want more power the sleeper way(you could just send your head and deal with downtime) or LE5 peeps who wanna ditch VVT and go nuts
    Alternatively you could run an MSD dist. I still say this news is best for those building a car from the wiring up or the 58x L61 guys once they can tune. Turning off VVT diagnostics in the LE5 might prove difficult
    I know stuff about ECOTECS

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    How much would taking off the VVT head help the 2.4 guys, and why would you want to do this, waht are the perks?

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    How much would taking off the VVT head help the 2.4 guys, and why would you want to do this, waht are the perks?
    REDFOCZ Quoted Post
    Variable Valve Timings advantages have always been:

    1. Better idle quality while still having performance capabilities
    2. Better gas mileage capabilities at cruising speeds

    I think it would be more of a hassle than positive to get rid of your VVT setup.

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    As I already posted I dont think the way to think of it is as removing VVT head from a 2.4L block , but adding 2.4L block to a non-VVT head. In other words making a large displacement L61 or LSJ, as opposed to making a non-VVT LE5.

    Why would you ditch VVT? Because it may be difficult to tune properly to your particular application, because the cams you wanna run arent avaialable in a VVT version, because the cam profiles you need to run arent compatible with VVT actuation.

    In order to succesfully use a non-VVT head on an LE5 you need to be able to disable the VVt functionality in the ECM, I dont know if this is currently possible.
    I know stuff about ECOTECS

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    I have an idea... If i can get myself a 2.4 bottom end.. I will put a 2.2 head on it and make the best damn tutorial on how to do it.

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