Thread: pop-off with 1.5ns & 95g
09-13-2008, 04:55 PM #1
pop-off with 1.5ns & 95g
Couple posts on here said with 1.5ns and 95g spring I should get avg of 42-45psi. However, it's not popping until 50-51PSI on all 3 carbs.
Should I trim the springs a little to get it lower or will ~50PSI pop-off be OK?
09-13-2008, 05:15 PM #2
09-13-2008, 05:24 PM #3
yes... using the razor-blade-method they are level. One needed to be bent a tiny bit.
I'm going to mess with them again in the morning and I'm going to try another gauge.
09-14-2008, 12:08 PM #4
They tested the same with the other gauge.
51, 50, 45
I cut tiny bits of the spring to get the first 2 down. They're now 43,44,45
09-14-2008, 02:10 PM #5
yet another update...
So after all that crap, it turns out Riva sent me the wrong springs!
I ordered 730-03027-T and they sent 730-03027....
115g vs 95g
That would explain it.
So I've got the pop-off PSI's set to ~44psi after cutting some of them. Should I leave them or should I get the right 95g springs? I've got the carbs all rebuilt and back on the rack for install tomorrow morning. If I wait for the 95g springs, it will be another week of waiting.
09-14-2008, 02:17 PM #6
How much did you cut off?? If it were my boat I would get the 95's Cutting springs changes the free height and spring rate. With the stiffer shorter spring the needle may not open far enough for the flow demand.
09-14-2008, 03:24 PM #7
09-14-2008, 07:06 PM #8
I thought I would be smart and cut my springs to get my correct pop off, but now that beerdart mentioned the spring height etc... I would put the correct springs in..And I will do the same I think that it is giving less control over throttle response with the cut springs.
09-21-2008, 07:47 PM #9
Order the right ones. But get them through Fox Distr., Inc. 50 N. 17th St.
St. Charles, IL 60174 (630) 513-9700. They are a lot cheaper and fast shipper. Not to mention they are a mukuni dist. Cut out the middle man.
Take that back riva is a dist too. But i think they are still a bit cheaper.
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