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Old 08-01-2006, 01:55 PM   #1
redgrocerygetter
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Default conversion question about an engine.

can I use say the heads out of a 98 legacy gt (DOHC) and mate it to the block from a 2000 legacy (SOHC)? I need a engine block and the problem with my old one is the crank won't move. The reason I'm looking for just a block is I can't semm to get the old block apart. Just wondering if this might be a simple solution to the problem of should I just keep looking for one closer to my engine model year? Thanks for any info.

Aaron
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Old 08-01-2006, 02:12 PM   #2
Matt Monson
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That's a perfectly acceptable solution. A number of guys have done it to gain some performance as it bumps the compression ratio a little bit. Do it...
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Old 08-01-2006, 10:34 PM   #3
redgrocerygetter
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bump. No one else have any input?
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Old 08-01-2006, 11:12 PM   #4
Russell Rogers
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Got it in my car. I love it..
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Old 08-04-2006, 11:26 PM   #5
redgrocerygetter
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sweet sounds like a winner then. How much of a gain did you guys get when you switched the two? I'm planning on keep'n it NA but I what to do some internals to boost the power output. Thanks for the info.

Aaron
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Old 08-05-2006, 02:50 AM   #6
Growit
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If you want to "do some internals to boost the power output". The most cost effective change is sending off your cams to Delta for a regrind. It will run you about $300 with shipping. It is almost a no brainer since the cams will be out for the block swap anyway.

With a phase1 head gasket your CR is going to be about 10.6:1 (stock phase1 is 9.5:1). Using a phase2 head gasket your C/R is going to be about 11.2:1. Using the Phase2 head gasket will put your cam timing slightly out of phase with one another.

So changing out your pistons will only net you a little bit more if anything at all. If your concerned about your quench you will have to change your pistons and get some longer custom rods made. To get pistons and rods your looking at about $1600 for parts, not worth it to me to get to 11.2:1 w/ proper quench.

The rest are standard bolt ons.

I have a stock MY05 short block w/ MY96 heads, delta cams and a gready emanage to tweek timing and A/F levels. To let the engine breath a little more I went with an AMSOIL Ea Air Filter. The KandN breaths a little better but doesn't filter as well.

I make regular long hauls in the Outback so I haven't gone with a CAI and Exhaust because of the noise level.

Now if someone knows of a quiet performance exhaust system, please let me know...

Hope this is the kind of information that you are looking for.

Last edited by Growit; 08-05-2006 at 03:13 AM.
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Old 08-06-2006, 05:17 AM   #7
redgrocerygetter
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yes that was helpfull. What does quench mean? Never heard that phrase before. Thanks.

Last edited by redgrocerygetter; 08-07-2006 at 04:26 AM.
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Old 08-31-2006, 02:08 PM   #8
redgrocerygetter
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Quote:
Originally Posted by redgrocerygetter View Post
yes that was helpfull. What does quench mean? Never heard that phrase before. Thanks.
really what does Quench mean?
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Old 08-31-2006, 02:24 PM   #9
Matt Monson
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http://www.theoldone.com/archive/quench-area.htm

God, it's literally been years since a google search brought up a "The Old One" article. Back in the day he was a Honda tuning guru...
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