Piston weight 4.2 NA engine
Thread Starter
|
Veteran Member
Joined: Apr 2008
Posts: 3,616
Likes: 1,070
From: Europe
Piston weight 4.2 NA engine
Does anyone know what the piston of a 4.2 NA engine weighs? Preferably with wrist pin & rings?
As some of you have seen in my latest dyno graph, power is still climbing until 6200 rpm, so am contemplating upping the redline a bit to test. I think the NA engines have the same conrod, so my thinking is if they can handle pull forces at 7000 rpm, and if the weight difference is marginal (I expect the SC version to be slightly heavier), then I want to try to up it to 6500/6600 rpm.
Here are the ones for a 4.2 SC engine in grams
Piston with rings = 322
Wristpin = 117
Conrod (with bearings) = 591
As some of you have seen in my latest dyno graph, power is still climbing until 6200 rpm, so am contemplating upping the redline a bit to test. I think the NA engines have the same conrod, so my thinking is if they can handle pull forces at 7000 rpm, and if the weight difference is marginal (I expect the SC version to be slightly heavier), then I want to try to up it to 6500/6600 rpm.
Here are the ones for a 4.2 SC engine in grams
Piston with rings = 322
Wristpin = 117
Conrod (with bearings) = 591
Thread
Thread Starter
Forum
Replies
Last Post
KarimPA
S-Type / S type R Supercharged V8 ( X200 )
11
Sep 12, 2015 08:15 AM
KarimPA
New Member Area - Intro a MUST
8
Sep 3, 2015 07:32 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)