8.5:1 or 9:1 pistons

[Aproductions]

I never go to the track, and I am a daily driver and I do some pulls on the highway with other cars,...nothing like a race though, just a good pull...so 9 is better for that? or do I want the topend?

 

[ramsack]

No one has mentioned more torque from higher compression. And better off-boost MPG.

 

[SBR Joe]

I never go to the track, and I am a daily driver and I do some pulls on the highway with other cars,...nothing like a race though, just a good pull...so 9 is better for that? or do I want the topend?

Youll have plenty of top end with 9:1. read the posts i just made haha. you can reap the benefits of both worlds with higher compression till a certain point. You not making an asinine amount of power and boost, can get the best of both worlds with the 9:1 and still run teh same boost you may have wanted too on teh 8.5:1's.

 

[Aproductions]

thanks for all your help guy and I'll be running 9

 

[SBR Joe]

thanks for all your help guy and I'll be running 9

Clean out your PM box, , and send me a PM. I have some info i think youll like

 

[fede]

your turbo will spool up a little bit quicker.

 

[Guzman08]

so how did it go ? i really want to know what u choose

 

[Aproductions]

9:1 manley platinums

 

[tazndrew04]

Your car comes stock with 8.5:1 so just go with 9:1 if you want a faster spool up and ull be good

 

[2GbTalonGuy]

Lower compression = more boost.
higher compression = better chances of knock on higher boost

 

[Guzman08]

ok.. here is a scenario: both are 98 eclipses. gsx. have the same mods, same hp, same everything except on the amount of boost and pistons. ex only:
98 eclipse 8:5:1 running 30lbs of boost have 400hp
98 eclipse 9:1 pistons running 23 lbs 400hp. as well.

which one of these cars should have a better 1/4 ? or if its the same.


i know that its just what ive been reading. it allows u to run less boost but with the same hp.. but besides hp what else does it have an effect on. i think someone said torque above.

 

[e85_4g63]

Higher compression (to a point) is better for a daily driver. I don't think anyone would disagree with that. Like everyone say's time and time again... it's all in the tune.

 

[crazyboy81]

The people I know that have spun rod bearings with eagle was because they thought they could just slap them in their stock setup without properly measuring first. Eagles rods like mine sometimes come with wide spread journals.

I'm thinking about going with Eagle for my 420A, what do I need to look for if I got them?

 

[Aproductions]

this is an old thread guys