Do blowers require "special" pistons?
Thread Starter
Le Mans Master
Joined: Jul 2001
Posts: 8,183
Likes: 3
From: Santa Maria, CA
Do blowers require "special" pistons?
Aside from them being forged.
I was just perusing a parts catalog and notice they sell "blower" pistons. What's different about them vs. a NA application piston?
I'm in the early stages of doing a build up and am entertaining the idea of S/Cing. My stock 89 4bolt main block has been hot tanked and the shop waiting for my instructions on it. I have a fresh forged crank and h-beams.
If I decide to supercharge, I wouldn't be able to install and tune it till the winter. Would I be able to run NA with rings that are gapped for forced induction for a coupla months?
[Modified by 89 Paul in Cal, 4:12 AM 10/10/2003]
I was just perusing a parts catalog and notice they sell "blower" pistons. What's different about them vs. a NA application piston?
I'm in the early stages of doing a build up and am entertaining the idea of S/Cing. My stock 89 4bolt main block has been hot tanked and the shop waiting for my instructions on it. I have a fresh forged crank and h-beams.
If I decide to supercharge, I wouldn't be able to install and tune it till the winter. Would I be able to run NA with rings that are gapped for forced induction for a coupla months?
[Modified by 89 Paul in Cal, 4:12 AM 10/10/2003]
Racer
Joined: Sep 2001
Posts: 354
Likes: 0
From: Prineville Oregon
Re: Do blowers require "special" pistons? (89 Paul in Cal)
The gaps are wider on a blown piston, you would be able to run them NA but you may end up having a little more blow-by until you install the blower.
A blower piston has an inverted dome which lowers the compression ratio down to 7.5-8.5 to 1
Also the ring-lands are typically thicker on a blower piston to withstand the added stresses.
Deen
A blower piston has an inverted dome which lowers the compression ratio down to 7.5-8.5 to 1
Also the ring-lands are typically thicker on a blower piston to withstand the added stresses.
Deen
