1st compression test just under 120psi

Status
Not open for further replies.
My harbor fright compression gauge showed around 130 and when I bought a quality gauge, it was really over 140. Big difference! I threw out the harbor freight gauge.
 
Luv2Camp said:
My harbor fright compression gauge showed around 130 and when I bought a quality gauge, it was really over 140. Big difference! I threw out the harbor freight gauge.
Click to expand...

Well i just got the new hf gauge and now im just over 120. But there was a small difference between the two.
 
Matt Braley said:
Be careful tearing into a good running ski. I notice your a Fl rider so there could be salt use. If you break one bolt now you have opened up a big can of worms.
Click to expand...

Im gonna try one more tester. Lets say i am at 120's but my ski runs fine. I guess you can call me greedy but i want my 717 to be all that it can be. And if im down 20+ psi. Im not cool with that.
 
If your ski's compression is truly 120psi, it won't be running fine for long, you will need a rebuild.

Lou
 
With digital rpm and gps mph #'s we would know exactly where your ski is at. A thousand dollar rebuild bill is not worth the slightly better acceleration and 1-2 mph improvement that it would provide(assuming your compression is actually low). Unfortunately in the world we are living in down here it is only a thousand dollar ski in the first place.
 
Matt Braley said:
With digital rpm and gps mph #'s we would know exactly where your ski is at. A thousand dollar rebuild bill is not worth the slightly better acceleration and 1-2 mph improvement that it would provide(assuming your compression is actually low). Unfortunately in the world we are living in down here it is only a thousand dollar ski in the first place.
Click to expand...

I can give you mph my fastest was 49 on gps. And that is a good point. Im gonna get one more real reading and go from there. Yeah why spend the extra $ that much of an improvement when i do plan on getting an spx 787 one day
 
you tried it with a another hf compression tester? i would try it with a good quality compression tester and see what it is. very possible u got 2 bad compression testers from hf. two tools that you should never cheap out on is a compression tester and a torque wrench.
 
eddie708 said:
you tried it with a another hf compression tester? i would try it with a good quality compression tester and see what it is. very possible u got 2 bad compression testers from hf. two tools that you should never cheap out on is a compression tester and a torque wrench.
Click to expand...

Yeah i know not the smartest choice. But you are right i eill not get a HF torque wrench
 
however if u have a compression tester that is consistently 30 psi low thats a good tool to keep around when u go to buy skis. work the price down a bit.
 
eddie708 said:
however if u have a compression tester that is consistently 30 psi low thats a good tool to keep around when u go to buy skis. work the price down a bit.
Click to expand...

I certainly hope that you meant your comment as a joke. How can we expect honesty from sellers when buyers are crooks?

Lou
 
LouDoo said:
I certainly hope that you meant your comment as a joke. How can we expect honesty from sellers when buyers are crooks?

Lou
Click to expand...

yes lou im kidding around. even tho most of the time it is the sellers honesty we have to worrie about. but if it consistently low u can use it and just add the difference to it. my cousin had a gauge like this, low by 20 psi. on the back of it i just wrote +20psi with a marker so we never be confused with bad compression readings
 
Status
Not open for further replies.

Similar threads

Yam00Star
1995 GTS blown front piston
Replies
7
Views
163
Yam00Star
Yam00Star
J
1995 GTX 657x Engine Compression
Replies
2
Views
562
Venturian1
V
jordan36w
1996 xp800 bog
Replies
3
Views
292
Stevie96xp
Stevie96xp
A
Motor cranks, but no run till it’s given a sniff of cleaner
Replies
0
Views
91
AJF22
A
M
1997 GTX Water Ingestion
Replies
5
Views
269
Stevie96xp
Stevie96xp
Back
Top