99 pistons with 98 rods???????

[fastsc99]

i have a a 99 dohc i want to put 98 rods in and put 99 pistons on top well it work ok and well it affect compersson please let me know asap

[sl2racer]

most of the rods and pistons are interchangeable. you will be fine.


p.s. i deleted all your guys smart ass replys. there are other sections that you can monkey around in. not this one.

[Jeremy]

most of the rods and pistons are interchangeable. you will be fine.


p.s. i deleted all your guys smart ass replys. there are other sections that you can monkey around in. not this one.

he CANT use 98 rods and 99 pistons. 99 pistons are meant for the long rods in the 99-02 engines. 98 rods are shorter and are supposed to be used with the 91-98 pistons, with the lower wrist pin height.

and I didnt make a smart ass reply. at least my info was correct.

[TurboSL1]

Re: 99 pistons with 98 rods???????

i have a a 99 dohc i want to put 98 rods in and put 99 pistons on top well it work ok and well it affect compersson please let me know asap

Y so much ASAP??? are you RIGHT now over the engine?


lol


If you want to affect you're compression preatty cheap: mess around w/ the valves, there are the dished ones and the flat ones

I know it has NOTHING to do w/ the pistons but he was talking about compression so I wanted to let him noe

[fastsc99]

im turboing it and i want to put all new shit in it and i want to get a abetter rod off sda but theyonly make the 98 rods right now and casue if i get there pistons i well have to get a 980.00 head so i can use the pistons casue the head is domed more for the pistons to work so i was just going to buy rods and new piston rings and new main bearings and shit and call it at that

[saturnspeed_12]

all heads are domed on gasonline engines, thats where the compression/combustion happens. diesel dont because it happens in the piston.

you can run the 91-98 rod and piston, and since you want to turbo and i take it your buying the pistons there, get the sohc pistons.

[Ranzear]

SOHC pistons with correct rods and DOHC head = ~8.9:1

[sl2racer]

why not just get a junkyard head and have it machined???should save you a few hundred dollars.

[Jeremy]

You dont have to get sda pistons if you get one of their heads.

[fastsc99]

no look at this you guys are all off this is what im talking about read all of it


SDA Stage 2 Forced Induction Head
This head features This head is professionally Ported, Polished, Resurfaced, Cleaned, and Reassembled including Hi-Temp Valve Seals. Its ports are larger than the N/A heads. These Heads are also treated to combustion chamber material removal on the underside of the head. This reduces compression due to the area of the head being larger. Compression ratio is reduced down to approx. 8.7 to 1 - 9 to 1, an optimum for most any turbo or supercharged application. This in turn will allow you to use the hyperutectic pistons instead of expensive forged pistons. Designed for Saturns running Boost (turbo, supercharger, large shot of Nitrous)

see so im just trying to save some money so i was just going to get the 98 rods they have and use my stock 99 pistons and put new rings on them so i can use my stock head but if i but the 98 rod and the 98 hyperutectic piston than i have to buy that head. Im not after a head im after rods and pistons for my 99 motor so i can have a little bit of a buffer zone you all know what im talking about if you drive a turbo satty

[saturnspeed_12]

SOHC pistons. just because you drop compression ratio doesnt mean you dont need forged pistons. its more about tuning. cast pistons can handle some boost, hyperutectic can handle moderate boost (BE VERY AWARE OF DETONATION!!!!!!!!!), while forged can take quite a bit. yet still even buying forged pistons doesnt mean your safe, you can utterly destroy forged pistons if its not tuned. tuning is the key.

for all it matters, you can run stock pistons, rods and head and run 8psi if its done properly. if your trying to cut corners, then just get the sohc pistons but remember cutting corners espeically for something like this can lead to disaster.

[fastsc99]

well how cani do this the right way thats all i want is to do this the right way so please throw some cards up and give me some help this is my first big thing with this motor so talk to me people im going to run a t3/t4 turbo i have a intercooler i have a super afc2 and msd coils and accel wires and hsk cat back i want to run 6psi and this is going to be a every day drive maybe dont know yet

[saturnspeed_12]

91-98 rods with sohc pistons should work out. guys boost on stock internals all the time, just dont put too much boost on them and keep an eye on air/fuel ratios. but really i would upgrade pistons over rods, but then the stress would move to the next weakest link, the rods.

not trying to scare you and say BUY ALL FORGED RAWR!! [img]{SMILIES_PATH}/lol.gif[/img] but you might want to think pistons over rods but its not my decision. but i guess it depends on how much your spending on the internals and about whether to keep your 99 or go for the early rod and piston combo.

[fastsc99]

where do i get aftermarket 99 pistons and rods ???? all i see stuff for is 91-98

[saturnspeed_12]

you can use 91-98 rods and pistons in your 99 block. you cant mix 91-98 rods/pistons with rods/pistons from a 99-02, because in 99-02 the rods are longer and the wrist pin in the piston is higher to compensate for the extended rod, yet a 91-98 piston/rod combo has the same height as a 99-02 piston/rod combo.