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Just pressure test the pump. Should be done after every time you take it apart.

Auto parts store will have 518 or the Permatex equivalent.

Sounds like a good plan

My 951 is running open flame arrestors with 95 lows and 165 highs. 2.0NS with a 20psi pop off. Runs great, got the specs off Matt B here

Have two 155mm brass pumps and one 155mm small hub with Solas impeller $100 each plus shipping

Hit it with the torch

2003 SeaDoo Manuals - FREE PDF Download! Operators guide and service manual will have all your answers.

My calipers are not big enough so had to use a tape. Rough measurement but should give you an idea of width.

I can measure one today. I believe you can wallow out the bottom holes on the 155 and make it fit on the 140mm studs. You'll have to open up the 140mm ride plate to 155 if you go that route. A few guys have done it on their X4 hull skis. Google 951 X4 or 1100 X4 to find their build threads on...

I think you got it. The yamis were more rounded in the nose.

Looks like an old yamaha lol. VXR or waverunner

A decent trailer is worth $500 or more these days so you wont lose if you end up having to part it down.

You're going to want to use a 155mm or bigger pump I'd say. The 1990 models had an old 140mm pump since the motors didn't make a lot of power at the time. There's a lot more impeller options for the amount of power you are making if you go with a 4tec pump.

Last post here, can't stand people who just buy to try and return. Completely kills a small reseller. If you can't even mic a fuel line to know what size it is, you should probably pay a shop. On top of that, all the advice given to you goes right over your head. Good luck with your ski.

Atlantic jetsports has them. Search primer T fitting.

Here's the last one I did with some block off plates I made as an experiment.

You have to pressure test with reed cages installed. They are most likely old and can leak air which will cause a run away and/or lean fuel mixture. I like to test with the exhaust manifold installed as well so know the water jacket is not leaking into the cylinders.

This is in the service manual. Did you even read the fuel section? 😂

What component(s) could cause an air leak past the carburators that would not have been pressure tested by SBT? Look over the service manual again. You installed them yourself.

That's correct. You are not pressure testing the block with the carbs attached.