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ls-v tec vs. ls turbo?

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Old 01-22-2007 | 08:28 AM
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Default ls-v tec vs. ls turbo?

now ive heard that the ls vtec is unreliable. now is it less reliable than a turboed ls. i know it depends on hoe the ls vtec is built. i was going to do b16 pistons, arp headstuds, single layer head gasket, and maybe some cams
Old 01-22-2007 | 10:13 AM
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Originally Posted by teggy92
now ive heard that the ls vtec is unreliable. now is it less reliable than a turboed ls. i know it depends on hoe the ls vtec is built. i was going to do b16 pistons, arp headstuds, single layer head gasket, and maybe some cams
Not sure which setup your considering but...

Single Layer head gaskets are a horrible way to raise compression. Same goes with using a "thick" head gasket to lower compression. Best to stick with the OEM 3 layer.

Both LS-Vtec and LS-Turbo setups are perfectly reliable when built correctly, and tuned "to the T." If you don't mind learning & performing the maintenance, going FI is the best bang for your buck, in terms of WHP. If your considering going the NA route, it's better to mill a small amount off the head if you need to raise compression, and use an OEM gasket. You can also use flat faced valves to gain a few points.

What CR are you looking for? And what cams are you considering?
Old 01-22-2007 | 05:19 PM
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find an old poewr pages modified did- I was gonna do an ls-vtec then turvo it. TUrns out thats what thye did....It was a good build. Do both, Then run a low shot of nitrous- Then purge that onto your intercooler, that'd be swete.
Old 01-22-2007 | 06:09 PM
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^ What?
Old 01-22-2007 | 07:14 PM
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Rather than use a system of power adders that increases the likelihood of catastrophic failure.... select one method of tuning and follow through.

You can build a reliable LS-VTEC.
We have many threads about this build.
Search.

You can also build a reliable turbocharged B18A1 (LS motor)
Again, use the FAQ and our search engine to learn about your options.

If it were my choice, I would skip the LS-VTEC head in favor of an overbuilt turbocharged B18A1.
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Old 01-23-2007 | 06:16 AM
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you can always start out with a built ls/vtec motor and then later if you want more power then add a turbo kit later depending on what you are looking to spend!
Old 01-27-2007 | 07:41 PM
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Originally Posted by primetime
you can always start out with a built ls/vtec motor and then later if you want more power then add a turbo kit later depending on what you are looking to spend!

Exactly.
Old 02-02-2007 | 12:37 PM
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but then again the turbo manifolds are the same so you can turbo it then switch the head. that's what i am doing. gonna run 7 lbs for a while put on the head then build it all.
Old 02-03-2007 | 07:53 AM
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Originally Posted by driftdoggy
but then again the turbo manifolds are the same so you can turbo it then switch the head. that's what i am doing. gonna run 7 lbs for a while put on the head then build it all.
but at the same time if he did it your way he going to need to get a gsr head, and lsvtec conversion kit, a gsr ecu, tuning injector etc etc etc. he's better off doing the lsvtec first and then the turbo kit
Old 02-03-2007 | 12:02 PM
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Originally Posted by primetime
but at the same time if he did it your way he going to need to get a gsr head, and lsvtec conversion kit, a gsr ecu, tuning injector etc etc etc. he's better off doing the lsvtec first and then the turbo kit
In order to "do it right", he is going to need a tunable ECU reguardless of wether or not a vtec head is present.

I do agree that the LSVtec should be done first though.



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