85 2.2 Cast Pistons

[scarling_666]

is there any place that carries STD bore 2.2 pistons? i'v been looking around and the only place i could find was forward motion, but then i read that the federal moguls are hypereutectic. i don't want to buy forged pistons, is there a place i can get cast ones in a standard bore?

[allmotor]

United Engine and Machine Co.

badger pistons

are 2 companies I buy cast std. pistons

[scarling_666]

the silvolites say they're hypereutectic also, these will be going into a turbo engine by the way. can anyone confirm if the ones forward motion carries are hypers? i guess if all else fails i can get a used one from FWDP, would that be a really bad idea? i'd re-ring them all, and it wasn't detonation that caused the failure.

[allmotor]

I used the 1986-1988 2.5 cast piston in my 2.2 turbo application. it is a cast piston with nearly the same effective compression ratio. (turbo pistons is 2.6 x .190 for the dish while the 2.5 is 2.640 x .160)

[scarling_666]

But if i go with the later style pistons, then i'll have to change the rods. i think i'll go with the used one from FWDP, i know that may sound half assed and you should never do anything half assed when it comes to internal engine parts but it sounds most logical to me, and most cost effective.

[allmotor]

Quote:

Originally Posted by scarling_666 But if i go with the later style pistons, then i'll have to change the rods. i think i'll go with the used one from FWDP, i know that may sound half assed and you should never do anything half assed when it comes to internal engine parts but it sounds most logical to me, and most cost effective.

why would you have to change the rods. man everytime I give you a suggestion, you shoot the crap out of it. if you don't like what you are hearing, go somewhere else or find another sucker to try and help you.

[scarling_666]

Quote:

Originally Posted by allmotor why would you have to change the rods. man everytime I give you a suggestion, you shoot the crap out of it. if you don't like what you are hearing, go somewhere else or find another sucker to try and help you.

sorry that wasn't my intention.
the rods i have are for pressed pins and the later ones are for floating arent they? i appreciate your input, but i would rather not mix and match between engine sizes too much, i got into a mess when i replaced the transmission and tried that. i think i'll do a bit more researching on these before i decide which i'll go with. thanx for your help

[allmotor]

Quote:

Originally Posted by scarling_666 sorry that wasn't my intention. the rods i have are for pressed pins and the later ones are for floating arent they? i appreciate your input, but i would rather not mix and match between engine sizes too much, i got into a mess when i replaced the transmission and tried that. i think i'll do a bit more researching on these before i decide which i'll go with. thanx for your help

dude, you just don't get it. ALL non turbo engines are pressed pins. floating pins were used on turbo 2 and newer turbo engines. the 2.5 piston I directed you are 1986-1988 ONLY and ONLY come with pressed pins and will give you the same compression ratio and is a direct fit and will save you money and is EXACTLY what you are asking for. BTW you can use full floating pistons and pins on pressed rods and press them in... do some more research so you have a better understanding of how an engine works. there is ABSOLUTELY NO difference as to the 2.5 piston I directed you to and what you are asking for. a CAST piston for your turbo engine. I was trying to assist you and directly answered your question GAVE you every opportunity to actually save some money and do things right. but you just dont appear to have any assembleance of a clue

[86Tona]

Quote:

Originally Posted by allmotor dude, you just don't get it. ALL non turbo engines are pressed pins. floating pins were used on turbo 2 and newer turbo engines. the 2.5 piston I directed you are 1986-1988 ONLY and ONLY come with pressed pins and will give you the same compression ratio and is a direct fit and will save you money and is EXACTLY what you are asking for. BTW you can use full floating pistons and pins on pressed rods and press them in... do some more research so you have a better understanding of how an engine works. there is ABSOLUTELY NO difference as to the 2.5 piston I directed you to and what you are asking for. a CAST piston for your turbo engine. I was trying to assist you and directly answered your question GAVE you every opportunity to actually save some money and do things right. but you just dont appear to have any assembleance of a clue

I should probably stay out of this but....

In his first 'question' regarding the use of newer rods with the pistons you suggested I didn't think he was busting on your suggestion at all. I read it as another question.

Then you post this telling him to do more research. Isn't that what these forums are for? Sure questions have to be answered over and over for the new folks because the same question was answered before but that was several pages back. To phrase a question so the search engine will find the 'right' resonse is harder than asking it again. But not if it means being slammed for doing it.

Lighten up. And....scarling_666 PM me if you'd like the name of another forum where folks take the time to actually answer your questions rather than blasting you and telling you to do more research.

[scarling_666]

well, i just pulled the damaged piston out to find more bad news, the rods are stamped LW!!! i thought 85's were suppose to have the beefy rods? i'm starting to wonder if this block is worth salvaging or should i just go to the junkyard and pull a new motor and rebuild that? according to thedodgegarage these blocks "tend to flex" at what horsepower/torque does this start to happpen? i was hoping to get up to 20-25psi (not sure what HP that would be) out of it, will the block handle it? i want to stay with a 2.2 just because thats what i want but i highly doubt i can find a T2 block. would finding the beefier early rods and get stock pistons be enouph?

EDIT* my bad, just read on TDG flexing hp is past 225-250.

[86Tona]

If you're planning to run an engine and boost to 20 - 25 psi, you'll need a beefier block and forged pistons. The cast pistons probably won't last long at those boost levels. And if you're planning to actually build the engine to deliver the HP which will result you'll need better internals than the LW rods etc. The '85 engine just wasn't meant to put out that much.

IIRC eash one psi is worth something like 7 to 10 HP. So if you boost to 25 and stock is 141 at 7 then with 18 more psi you'll be doing in excess of 300.

Give it a try, once, and that '85 engine may just explode.

[scarling_666]

so, if i keep it at around 14psi then it should be ok right? that puts me at between 190 and 211 hp. i don't have the money to put into this car for forged pistons and a new block. the only question is still the rods, i can look for some earlier ones but if i can't find any will these last?

[turbomini]

umm the piston dont hold past 15 i broke all the ring lands on all the pistons when the waste gate line fell off as i was passing a mustang and the boost spiked to like (the gadge only said 30 and it was past that so i dont know how much) but it streached teh head bolts 30 thousands and at a hole in the head (below is a pic of the head lol)

[scarling_666]

i ran it at 14 for a while then had a whole bunch of boost creep problems and overboost. when this happened it was set at about 12-13psi with o2 voltage of .91. i just ported the wastegate out a bit and redid the boost controller line with a very sturdy vacuum line. hopefully that will help with the boost creep, i'm still worried about what those rods will do.

[turbomini]

umm the rods hold good for me they never failed in my mini van whe it broke the pistons and ect. so you should be good with the set up you have now just look into pistons. thats all i'd do becuse your not building a race car or anything so new rods are no a big deal, for now anyways. well good luck with your project