what options are out there for low compression pistons?

This is the place to ask questions about your engine components like cams, valves, pistons… just anything that is generally "engine" specific. This also includes questions about exhaust systems such as exhaust manifolds, piping size, mufflers, ect...
Post Reply
User avatar
04sxt2.0
2GN Member
Posts: 640
Joined: Sun Apr 03, 2005 10:02 pm
Location: Chicopee, Ma

what options are out there for low compression pistons?

Post by 04sxt2.0 » Sun Nov 03, 2013 11:15 am

what options are out there for low compression pistons, I know je makes some but I cant find them on there website. read on howell automotive, they are custom made pistions, or is there another brand that makes them cant seem to find any other brands out there for an 03 and up 2.0l. or is there another piston like a dohc? looking to turbo my neon, its apart due to back rings, or should I just run my head shims on stock rods and pistons? if so how much boost can be run safely? just looking for some insightful information. on what way I should go.
Image

04 SXT- daily driver
93 GSX-16g turbo,dsmlink v3, bored 0.40 over 2g maf, ported head. Toy

CAI, lorenzo 60mm throttle body, B&m short shifter, SRT exhaust, 32" glass pack.

upcoming mods, RT manifold, UDP, and ODP,

ThatKevin
2GN Member
Posts: 1176
Joined: Wed Aug 03, 2011 12:48 pm
Location: Brampton, ON

Post by ThatKevin » Sun Nov 03, 2013 1:08 pm

JE has 9.2:1 for the SOHC and I know Wiseco has some 8.8:1 pistons. That's all I know of though


you can run 10lbs on a bigger turbo with a stock motor (with ARP rod bolts and fresh gaskets) as long as you have a good tune. People have done 8-12lbs without issues. A bigger turbo will be easier on the stock internals, since you won't have instaspool
Image
'02 Chrysler Neon RT - SOHC 50trim+Crane 007 ---DEAD---
'05 Dodge Neon SRT4 - DSP & bolt ons ---SOLD---
'08 Dodge Caliber SRT4 - MS1Kv3
Progress Log

User avatar
04sxt2.0
2GN Member
Posts: 640
Joined: Sun Apr 03, 2005 10:02 pm
Location: Chicopee, Ma

Post by 04sxt2.0 » Sun Nov 03, 2013 3:47 pm

I do have a head shim that does drop the compression one whole point
Image

04 SXT- daily driver
93 GSX-16g turbo,dsmlink v3, bored 0.40 over 2g maf, ported head. Toy

CAI, lorenzo 60mm throttle body, B&m short shifter, SRT exhaust, 32" glass pack.

upcoming mods, RT manifold, UDP, and ODP,

wickedgood4684
2GN Member
Posts: 312
Joined: Sat Aug 14, 2010 5:30 pm
Location: Lisbon Falls, ME

Post by wickedgood4684 » Sun Nov 03, 2013 6:36 pm

http://www.jepistons.com/Catalogs/Sport ... _420a.aspx

Is this what your looking for?

JE now lists their pistons for both the SOHC, DOHC and the Mitsubishi 420A. One piston for all three.

DOHC pistons can be used in a SOHC, but the SOHC has a 49cc combustion chamber where as the DOHC has a 52cc combustion chamber. This give a compressio increase when using DOHC style pistons with a SOHC head, even JE pistons. A proper machine shop can shave down the JE 8.5:1 pistons to return it back to 8.5:1 with a SOHC head
Image
SRT-4 Challenge series
Season 1 Champion: gotheframe/tim and corey
Season 2 Champion: Greasydeuce/Dmonday
NTCC
Winter Series:
Drivers Chamion: Neon Nick/Squat BIG
Team Champions: Team Acura: miniMench & wicked221
Rookie of the year: Patriot 01/xxPATRIOT 01xx

Post Reply

Return to “Engine”