what pistons are you running? - TCCoA Forums
 
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post #1 of 13 (permalink) Old 11-02-2004, 02:42 PM Thread Starter
 
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what pistons are you running?

i just got my hands on an explorer PI motor and am getting ready to start building it up. the engine will be set up with the following:
comp cams xtreme energy PI cams and valve springs
forged pistons (and maybe rods?) with about 11.0 to 1 compression
approximatly 150 shot N2O
headers, injectors, fuel pump, dyno tune, etc... all the supporting stuff

i guess what i'm asking is, where is a good place to get pistons? i'm pretty new to engine building, so i'm not exatly sure where to shop for this stuff, or which brand to buy. i'm trying to this on a somewhat reasonable budget.

thanks guys, i appreciate any input.
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post #2 of 13 (permalink) Old 11-02-2004, 03:23 PM
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forged rods are a must for what you want to do. 11:1 compression is higher than stock and you probably want a low compression motor for nitrous.

Honestly unless you are on a strict budget, then I would purchase a SVO roots blower and be done with it. You can run that on a stock block and still make good power with a good tune.

JH
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post #3 of 13 (permalink) Old 11-02-2004, 03:29 PM
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Quote:
Originally posted by JustinH
forged rods are a must for what you want to do. 11:1 compression is higher than stock and you probably want a low compression motor for nitrous.
I was under the assumption that Nitrous loved compression, but I could be wrong.

A second opinion????

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post #4 of 13 (permalink) Old 11-02-2004, 05:18 PM
 
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Nitrous does like compression, but if you want to add a blower down the road...keep it low (8.5 ish or so). Blower and nitrous...

Joe
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post #5 of 13 (permalink) Old 11-02-2004, 10:07 PM
 
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Nitrous+high compression=good combo. The cooling effect of nitrous also helps reduce detonation which is BAD for your engine.
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post #6 of 13 (permalink) Old 11-02-2004, 10:45 PM
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higher compression is good with nitrous.

i plan on doing a custom set of pistons from Badger Pistons. 11/11.5:1 is what im going to go for.

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post #7 of 13 (permalink) Old 11-02-2004, 11:09 PM
 
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I am torn between doing high compression with nitrous or forced induction on my engine buildup. I can't decide which to do.
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post #8 of 13 (permalink) Old 11-03-2004, 01:20 AM
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I like my forced induction plus nitrous. With these heavy cars it gives you that low end kick you need to get them moving.

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post #9 of 13 (permalink) Old 11-03-2004, 11:01 AM Thread Starter
 
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this car is sort of my daily driver, at least about 9 months of the year, so i don't want to go crazy with a blower and all that. i've weighed the options and this is how i want to go, a stout NA motor with spray to end any doubts when neccesary.

so what brand pistons/rods or where did you get them? i've looked at sean hyland, modualr depot, DSS and a few others. i know these kind of parts for these engines aren't cheap, but everything i've seen seems a bit pricey. any suggestions?

thanks again guys!
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post #10 of 13 (permalink) Old 11-03-2004, 12:15 PM
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mike and john tymenski at modularperformance.com are good to work with.

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NMRA MM7270 -- NMCA EFI/? ????
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post #11 of 13 (permalink) Old 11-03-2004, 05:48 PM
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All of the mentioned vendors will supply the parts you need. Mike Tymensky would probably be good to work with as well and possibly could work with you on a better deal. Just all depends on what the other vendors can/will do price wise.

As far as the compression, as others have mentioned, nitrous does like compression but keep it to a safe level for all the street driving you say you will be doing. I'd say 11.1 would just about be max for the NA street set-up. Really depends on how much street driving you intend on doing???

Good luck in your modding and let us know how it is progessing.

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post #12 of 13 (permalink) Old 11-24-2004, 04:14 PM
 
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I got a set of factory '03 Cobra Manleys for rods, and a set of Mahle pistons. Seems to be about the most bulletproof setup around, but the coated Mahle's will set you back about $750-$800.
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post #13 of 13 (permalink) Old 11-24-2004, 07:47 PM Thread Starter
 
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thanks for the suggestions guys.

i went with a set of probe forged pistons with a 10cc dish for about 10.4:1 compression.
the rods are Scat forged H-beams.

i got a great deal on these from Brian at AD performance. got all that(including rings) for $923 shipped, which beat the heck out of anyone elses prices. if you're looking for bottom end parts, he is definatly the way to go.


parts are coming together slowly, i'll keep you guys updated.
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