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 B20 head on an ls block??

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94TEG

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PostSubject: B20 head on an ls block??   Wed Dec 01, 2010 6:57 pm

What are the advantages/disadvantages of this? Will it gain any more power or lose power in certain ranges? Completely new to DOHC motors so much help needed.
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tjacang
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PostSubject: Re: B20 head on an ls block??   Wed Dec 01, 2010 7:34 pm

it will be pretty much the same...both heads are almost if not completely identical.

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94TEG

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PostSubject: Re: B20 head on an ls block??   Wed Dec 01, 2010 7:36 pm

Ok so really not worth the time doing the swap then?
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PostSubject: Re: B20 head on an ls block??   Wed Dec 01, 2010 7:48 pm

Definitely not. But if you really want to swap out heads, then get a b16 or gsr head and go vtec. I would in a heartbeat but being broke sucks hah. I know someone with a gsr head and grady is selling a gsr ecu and wiring harness. So you would be good to good, all you would need next is an ls/vtec conversion kit and it will come with everything else you need.

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94TEG

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PostSubject: Re: B20 head on an ls block??   Wed Dec 01, 2010 8:05 pm

Yeah but from what ive been reading it takes a good chunk of $$$ to do the swap just to gain a few more ponies. Guess I could just cam the hell out of the ls and go with it.
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PostSubject: Re: B20 head on an ls block??   Wed Dec 01, 2010 8:08 pm

Your right dude..it does takes a very good chunk of cash!! Thats why im not b20/vtec yet lol.

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94TEG

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PostSubject: Re: B20 head on an ls block??   Wed Dec 01, 2010 8:12 pm

Yeah may just wait til feb. when i get my tax refund and order a b16a from tiger japanese. That way it will be somewhat new motor and very reliable when i start modding. I do plan on swapping to a b series when i get my wife the 4 door civic. She may get my ls if i do a b16a...
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Grady

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PostSubject: Re: B20 head on an ls block??   Wed Dec 01, 2010 9:15 pm

Go at least to a b18c. Every b16 I've driven felt like a z6 down low till vtec crossed over. lol
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PostSubject: Re: B20 head on an ls block??   Wed Dec 01, 2010 9:39 pm

Im just lookin at it from a money stand point. B16 is like $900 cheaper than a b18c which isn't much difference in power rating. Shit who knows though I may end up just rebuilding the ls with parts I really want and save $500 over doing an entire swap where I gotta rewire damn near the whole car.

Right now I am just trying to look at all my options where I dont break the bank because my part of the tax refund my wife is splitting with me includes paint and new wheels. Really hate to put a $3000 motor in a fully primered integra.
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PostSubject: Re: B20 head on an ls block??   Wed Dec 01, 2010 10:02 pm

Depending if all integra's come prewired for vtec. You might be able to get away with just a gsr wiring harness or b16a harness. Obd-1 only though ! I know all 92 civic's came prewired for vtec even if they weren't a vtec model.
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94TEG

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PostSubject: Re: B20 head on an ls block??   Wed Dec 01, 2010 10:13 pm

Grady wrote:
Depending if all integra's come prewired for vtec. You might be able to get away with just a gsr wiring harness or b16a harness. Obd-1 only though ! I know all 92 civic's came prewired for vtec even if they weren't a vtec model.

Now that you mention it I do remember something like that with the civics. Now I do have a harness on the driver side of the firewall that is connected to nothing. Vtec harness plugin maybe?
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PostSubject: Re: B20 head on an ls block??   Wed Dec 01, 2010 10:31 pm

Vtec wires run in on the passenger side very top grey plug. It's a yellow and green wire and blue and black wire on the car harness side. The engine harness wont have the wires, but the car harness might be prewired.

Like this car has pictured

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PostSubject: Re: B20 head on an ls block??   Wed Dec 01, 2010 10:33 pm

Even if you don't have it prewired in your car harness. It's not a big deal to wire it up. afro
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PostSubject: Re: B20 head on an ls block??   Wed Dec 01, 2010 11:34 pm

i hear grady is pro at wiring up vtec (eli is a reference)!!

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PostSubject: Re: B20 head on an ls block??   Thu Dec 02, 2010 8:55 pm

Yep. You can just run your factory harness and run the 2 vtec wires and pin em to the ecu.. my opinion I would stay with the ls. strong and reliable. Unless you really just wanna hit vtec.

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Grady

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PostSubject: Re: B20 head on an ls block??   Thu Dec 02, 2010 9:10 pm

LS/vtec all the way! I ran a crvtec in my old blue hatch. Drove it all the time and hit the 8 k mark a lot. Just make sure to use arp head studs and rod bolts and you are golden!
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