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post #1 of 7 Old February 5th, 2014, 02:37 PM Thread Starter
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svo engine build assistance

So my girlfriend and I just started to build up a 2.3T engine for her 1991 mustang lx. Right now we have a block, 1986 svo block bored .030. We were looking into new pistons / rods for the motor. I have a few questions:1) How much power can the stock rods handle, or should I go to aftermarket rods?2) If I stay stock on the rods, the piston that summit racing is listing is an ICON Premium Forged. Are these pistons any good? How much boost will they handle?3) If I go with 5.7" rods, what work will need done to the motor to accept them? Is it as simple as Just getting pistons listed to accept 5.7" rods?4) will a stock 2.3 head work on this engine if I grind the "heart shaped" combustion chamber to a D-shape? Advance auto sells a new head for $410.00 that they state is for an svo, but I am uncertain of this.We were looking to make the bottom end as bullet proof as possible without killing the bank. We are both on college budgets as well. Any advice would be great. She is pretty set on this concept as well, no changing her mind. haha Thanks ahead of time!
I posted this in the svo section but i think i put it in the wrong section. Sorry for that...

1999 SVT Cobra
- 11:1 Compression Forged Short Block
- 03 4V Heads and Cams
- BBK CAI
- BBK o/r X-Pipe
- Borla Stinger cat-back
- Hurst short throw shifter w/ tri-ax handle
- 93 dyno tune

295hp/316tq
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post #2 of 7 Old February 5th, 2014, 05:55 PM
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Stock rods and crank will handle 400-450 hp.

The icon forged pistons would work well.

You can not port the 8 plug head for a 4 plug intake.

5.7 rods take no special work, only the right pistons.

Race engineering sells a 4 plug head that is better than a stock 4 plug. If you're buying new, check them out.

There isn't really any point in upgrading rods and not the crank, because they hold to the same power levels, so stock rods will work as long as you aren't pushing over 400 constantly.

---------- Post added at 05:55 PM ---------- Previous post was at 05:53 PM ----------

If you are using a closed chamber head, you don't have to grind it out to an open chamber if that's what you are referring to. As long as you have a 4 plug head with the matching efi intake, you will be fine.

1991 Mustang LX 2.3L 5 Speed convert
1989 Ranger 4X4 2.5L 5 Speed solid Dana 30 front axle, 4.5" suspension lift, 3" body. ( blown up....)
Entire turbo kit waiting to be used again.
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post #3 of 7 Old February 5th, 2014, 07:49 PM Thread Starter
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Right now, we don't have any rods, does anyone sell stock replacement rods? As far as a head goes all we have is an 8 plug head and intake. What are my options?

1999 SVT Cobra
- 11:1 Compression Forged Short Block
- 03 4V Heads and Cams
- BBK CAI
- BBK o/r X-Pipe
- Borla Stinger cat-back
- Hurst short throw shifter w/ tri-ax handle
- 93 dyno tune

295hp/316tq
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post #4 of 7 Old February 5th, 2014, 09:00 PM
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Like I said, race engineering sells a better than stock 4 plug head. If you have to buy rods, you might as well buy some 5.7 rods. ESSLINGER sells a piston and rod kit, its $500 and is flat tops, but the extra compression will make the turbo respond quicker and give better torque. You will need a tuner if you go doing something like that though. From 8.5:1 to 9:1 will need to be tuned in.i think esslinger does sportsman 5.7 rods for 250-$300. Look around at bo-port.com esslingeracing.com and raceeng.com they has everything you could want.

1991 Mustang LX 2.3L 5 Speed convert
1989 Ranger 4X4 2.5L 5 Speed solid Dana 30 front axle, 4.5" suspension lift, 3" body. ( blown up....)
Entire turbo kit waiting to be used again.
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post #5 of 7 Old February 5th, 2014, 09:05 PM Thread Starter
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I found a set of Remanufactured 2.3 connecting rods shipped for $70. Do you think these are ok to use?

1999 SVT Cobra
- 11:1 Compression Forged Short Block
- 03 4V Heads and Cams
- BBK CAI
- BBK o/r X-Pipe
- Borla Stinger cat-back
- Hurst short throw shifter w/ tri-ax handle
- 93 dyno tune

295hp/316tq
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post #6 of 7 Old February 5th, 2014, 11:18 PM
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Probably! As long as they aren't from a sketchy source.

1991 Mustang LX 2.3L 5 Speed convert
1989 Ranger 4X4 2.5L 5 Speed solid Dana 30 front axle, 4.5" suspension lift, 3" body. ( blown up....)
Entire turbo kit waiting to be used again.
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post #7 of 7 Old February 5th, 2014, 11:21 PM Thread Starter
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They are on sale. I think its a good deal

1999 SVT Cobra
- 11:1 Compression Forged Short Block
- 03 4V Heads and Cams
- BBK CAI
- BBK o/r X-Pipe
- Borla Stinger cat-back
- Hurst short throw shifter w/ tri-ax handle
- 93 dyno tune

295hp/316tq
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