Comp them
10-28-10, 09:47 AM
#2
Engine, Not Motor
iTrader: (1)
Join Date: Feb 2001
Location: London, Ontario, Canada
Posts: 29,789
Likes: 0
Received 108 Likes
on
91 Posts
Well...
S5 NA is 9.7:1, but since there were no NAs in Japan, then we are talking turbo which is 9.0:1. And it's the same for Japan and North America.
http://www.mazdatrix.com/faq/rotorwgt.htm
S5 NA is 9.7:1, but since there were no NAs in Japan, then we are talking turbo which is 9.0:1. And it's the same for Japan and North America.
http://www.mazdatrix.com/faq/rotorwgt.htm
10-28-10, 01:47 PM
#3
Senior Member
Thread Starter
iTrader: (1)
Join Date: Nov 2009
Location: S.F.
Posts: 730
Likes: 0
Received 0 Likes
on
0 Posts
Well im S5 T2 i didnt specify sorry. Im asking because a well known shop has a jdm engine with said 40k miles and 120 compression. Im considering it to get my car driving but im worried about how the water seals are. I thought that compression is really high for a turbo but I never new what the max allowable comp is before seeing carbon build up. wich i suppose you can get rid of by blasting throught the gears. so I hear anyway.
10-28-10, 02:06 PM
#4
then it's a 9.0:1 ratio. that is in the upper ranges so i would be skeptic that they put some oil in it during the test to skew the results. either way, the oil wouldn't affect it a huge amount so the compression figures do sound good, BUT keep in mind Jspec engines should be torn down and rebuilt anyways because the coolant seals will be dry rotted and likely won't last that long.
10-28-10, 02:54 PM
#5
Senior Member
Thread Starter
iTrader: (1)
Join Date: Nov 2009
Location: S.F.
Posts: 730
Likes: 0
Received 0 Likes
on
0 Posts
then it's a 9.0:1 ratio. that is in the upper ranges so i would be skeptic that they put some oil in it during the test to skew the results. either way, the oil wouldn't affect it a huge amount so the compression figures do sound good, BUT keep in mind Jspec engines should be torn down and rebuilt anyways because the coolant seals will be dry rotted and likely won't last that long.
Thread
Thread Starter
Forum
Replies
Last Post
Turblown
Vendor Classifieds
12
10-17-20 03:25 PM