SOHC Bored motor + boost...

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Sep 16, 2002 | 04:46 AM

#1 (permalink)

Cronic

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SOHC Bored motor + boost...

How well/reliable would an Ex (1.6L SOHC VTEC) motor respond to being bored .020 over and running several (10+) psi of boost? Im worried about reliability issues... Like breaking the cylinder walls and such. Perhaps I should just buy a used block instead? Or maybe only bore it out .010 over.

Sep 16, 2002 | 02:39 PM

#2 (permalink)

RainmanEK

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why spend all that money on a single cam?, when you could swap in dohc and spend less in long run and actually be faster!!?!! eric

Sep 16, 2002 | 02:50 PM

#3 (permalink)

chet

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boost + stock d-series bottom end equals broken rods.

like eric said, save for a b-series motor, they're stronger and more reliable.

Sep 16, 2002 | 08:49 PM

#4 (permalink)

Cronic

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Forged rods are hard to break. Boost or not.
Right now im not going to run that much boost. 7-10psi.
Once I bring up a good amount of block stability (Rods+sleeve+girdle) Then I'll bring the boost near 20.
Should be easily in the 12's.

Sep 16, 2002 | 11:08 PM

#5 (permalink)

StreetDriven

I <3 your mom

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Quote:

Originally posted by "CronicBurn"

Forged rods are hard to break. Boost or not.
Right now im not going to run that much boost. 7-10psi.
Once I bring up a good amount of block stability (Rods+sleeve+girdle) Then I'll bring the boost near 20.
Should be easily in the 12's.

Hey man more power to you, I think you should rock it...different is good

Rich

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Sep 17, 2002 | 04:34 AM

#6 (permalink)

Cronic

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I seem to be getting alot of static from everyone downing the SOHC. Ive seen a few of the D16's with 300+HP fully built with boost. If you build it right. It will be fast. Even if it is a 1.6L

Sep 17, 2002 | 08:11 AM

#7 (permalink)

shadowboy

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that is a dyno plot of a turbo 89 integra

only thing done to the bottom end are arias pistons and shotpeened factory rods.

the question is which D16 rod are you gonna use?

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Sep 17, 2002 | 08:28 AM

#8 (permalink)

Cronic

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@10 psi I was at 180whp. Go figure. Stock internals. Just a fuel pump and a FMU.

Now, The rods I will get once I need them are going to be from Crower. Like the rest of my motor.

Sep 17, 2002 | 09:02 AM

#9 (permalink)

foesicks

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Quote:

Originally posted by "chethewitt"

boost + stock d-series bottom end equals broken rods.

Not really, bad tunning + boosted = broken rods, thier are alot of people running 10 psi on stock bottom end d series with no problems.

Sep 17, 2002 | 03:26 PM

#10 (permalink)

Bill

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With the right parts a boosted D-series motor can be pretty rugged. The great part about it though is you can pick up parts, hell a whole damned engine for under $500. Don't see that happening with B-series do ya?

As for the overbore, .02 isn't anything more than a cylinder cleanup so I wouldn't worry.

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