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Old 09-22-2017, 10:23 AM   #1
jklein337
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1993 SC2
Default Parts Frankenstein questions

First post! To give you some background as to what my goal is, I'm going to turbo my car. But the questions I have are about mixing a 00+ bottom end (crank, block, pan and tie plate) with 93 rods and pistons out of my current car. What i'm not sure of with this block will the rod lengths give me a problem since the 93 rods are .151 shorter than the OEM 00+ rods? I'm trying to obtain a lower compression with a higher strength crank and block to possibly prevent any fault issues when i go turbo. I will also be using the dished valves from a 94+ with the 93 heads and would like to know if there is any machine work involved to make them work?

Last edited by jklein337; 09-22-2017 at 10:24 AM.. Reason: TItle correction

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Old 09-22-2017, 10:41 AM   #2
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Default Re: Parts Frankenstein questions

Might be okay with running 1st/2nd gen rods and 3rd gen piston's, should lower compression by a decent amount. Going the other way results in piston->head contact unless the piston's are machined down.

Look up the Deebs Rebuild. It generally calls for all the stock parts that result in a high-compression engine...use the opposite parts for lower compression.

Don't forget to either buy pistons with oil drain back holes or drill them in factory style pistons.

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Old 09-23-2017, 09:07 AM   #3
jklein337
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Default Re: Parts Frankenstein questions

Will the 3rd gen pistons work with the older style rods? I know they moved the wrist pin up on the 3rd gen pistons. Also where can i find Deebs build? Still new to some of the direct forum searching lol.

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Old 09-23-2017, 09:41 AM   #4
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Default Re: Parts Frankenstein questions

Swap guide http://www.saturnwiki.com/wiki/index...tle=Swap_Guide

1st/2nd gen pistons on 3rd gen rods: http://www.saturnwiki.com/wiki/index...6_3rd_Gen_Rods
I assume the same procedure can be used to test going the other way, they physically interchange fine it's just when it's installed in the block with the head put on that issue's pop up.

Semi-guide on FI: http://www.saturnwiki.com/wiki/index...rced_Induction

Mod a 4G63 manifold to fit the LLO head that's worth playing with: http://www.saturnwiki.com/wiki/index...TURBO-MANIFOLD

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Old 09-23-2017, 10:36 AM   #5
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Default Re: Parts Frankenstein questions

So even with the shorter travel distance of the 93' rods and pistons, it would cause interference? This is based on the swap guide you referenced.

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Old 09-23-2017, 12:13 PM   #6
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Default Re: Parts Frankenstein questions

I don't think anyone's actually tried it, for the cost's involved it's far safer to buy forged pistons and rods for boost rather than trying to reuse stock parts. You won't have to worry about the rods & piston combo hitting the head or block, but the longer piston skirt may need to be clearanced for the rod.

This is what I'm thinking of, for lowest compression & strongest stock parts:
  • '95 DOHC head, dual-intake cams (has longer duration than the exhaust cam), stock valves
  • '94+ block
  • '99-'02 pistons
  • '91-'98 rods
  • '93-'98 crankshaft
  • '00+ oil pan if using the '00-'02 tie plate on an earlier block
  • '92-'98 timing cover/set

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Old 09-23-2017, 12:38 PM   #7
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Default Re: Parts Frankenstein questions

Thanks for the info! Will the liner EGR require any converting electrical wise? And are the temp sensors in the same locations with the came connectors?

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Old 09-23-2017, 12:48 PM   #8
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Default Re: Parts Frankenstein questions

Also i was curious as to whether or not the 00+ heavier crank would be more beneficial in my case than the earlier models.

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Old 09-23-2017, 12:56 PM   #9
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Default Re: Parts Frankenstein questions

EGR doesn't matter much, if you want to keep the "stock" '93 EGR then use a '94 head instead of the '95. I believe most just block it off and don't add anything in to Megasquirt's tune for it's action anyway.

Heavier rotating mass = slower revving (takes longer to increase rev's, similar to a lightweight flywheel). Tad bit smoother running, but heavier.

The PCM temp sensor is in the same spot, same wires, same part number '91-'02.
The gauge sender is in the same spot, same wires, same part number '91-'95 (different part number and connectors from the PCM temp sensor).

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