OSD SeaDoo Dual Carb Rebuild kit questions

[jimmaki]

Hi, my OSD dual carb rebuild kits just arrive for my twin BN-38s on a 1998 SPX. I have a few simple questions.

I added the accessory s.s. socket head screw set for the end caps, but two of the screws on the PTO carb regulator end cap are countersunk screws. The accessory pkg contains only hex cap screws. Should I use cap screws in countersunk holes? I have seen hex socket countersunk head screws but there are none in this pkg. see pic

One of OSDs marketing features is that they provide base gaskets which don't come in the Mikuni OEM kit. But the gaskets in this kit are paper thin. The ones that were on the SeaDoo, and I've had it since it was new, are about 1/4" thick. Are the approx. 1/64th thick gaskets suppose to replac the old thick ones? Or are they used on top of the existing ones and if so, on which side, the carb side or the intake manifold side?

 

[glsmohio]

Your base gaskets look really thick to me. I just did a rebuild on a 97 spx with that same kit. i used the stuff that they gave me. all is ok with mine

 

[Dr Honda]

1) You have pumper carbs... so the screws he sent are wrong. You can use the new screws if you want... but they will dig in, and the cover may be loose later on.

2) Yep... those are typical aftermarket gaskets. They will work, assuming you don't have any major damage on the flange. Personally I like the thick gaskets because they help isolate vibration, and will seal damage or warped flanges. But... I'm sure the old ones are hard as a rock by now. So, they aren't any good to put back in. Guess the choice to use them is up to you.

 

[racerxxx]

I would use all the hardware he sent you but use the original 2 screws for the pump bracket.

I love the thick gaskets but they're pricey. Be careful that the screws do not bottom out in the manifold. Your screws are 5mm longer that ones that run the thin gaskets. I can't for the life of me remember if they will bottom out, I ran into this on a Challenger but can't remember the outcome for the life of me. BE CAREFUL when tightening them down.

 

[CReynoldsMIZ]

where would you even buy those thick gaskets at?

 

[racerxxx]

Dealer, they came on the later stuff.

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[racerxxx]

Just another thing the aftermarket let's slip. You guys know I'm hell bent on my OEM parts.

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[jhjesse]

I don't like the aftermarket gaskets as well.
I trace the supplied gaskets on a sheet of garlock gasket material that I have then cut it out with a gasket cutter. The garlock sheet is about 1/8 thick or slightly less. Works great.

 

[jimmaki]

Thanks for the reference point. Mine is a 98 SPX so maybe they changed gaskets that year. I'm the original owner and this is the first time the carbs have been off that I know of. Well the second time and both times this week, but only because I didn't catch a warped check valve the first time.

 

[jimmaki]

Are SeaDoo dealers the only place to get the OEM thick gaskets? Mine is a half hour away, doesn't stock them, needs me to come in to place the order and then come back to get the part when it comes in. I'm spoiled by online buying I guess.

 

[jimmaki]

Thanks, I'll keep that info in case I have to go to plan B. I take it these things are common auto parts store items? Is garlock a brand name or type of material? These OEM gaskets look to be about 1/4" thick.

 

[racerxxx]

Are SeaDoo dealers the only place to get the OEM thick gaskets? Mine is a half hour away, doesn't stock them, needs me to come in to place the order and then come back to get the part when it comes in. I'm spoiled by online buying I guess.

First off, your dealer sucks. I mean, it's 2015 and they can't secure the damn order over the phone with a credit card? Anywho, this is the part number, 204250035. Osd can get them to. They're not cheap, most places are $12 a pop, OSD is $9. Let your dealer know, they invented the telephone years ago, they can retire their telegraph.

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[jimmaki]

I pretty much voiced the same reaction to the parts guy and he said the owner doesn't want to stock or even special order 2-cycle parts because there's "no market" and he loses money unless the work is being done there in his shop. And he didn't actually say it but I got the feeling they don't like DIY wrenchers which they claim is most owners of 80's and 90's Doo's. But they'll take your money no matter how old it is. I'd like to get this beast back together for the weekend so I'm going to go ahead and use the old gaskets. My thought, however brief, was to try some kind of gasket sealer with the gasket. But I wouldn't have a clue what to buy. The gaskets look good. No delamination or breaks in either surface. They don't seem hard or brittle. I can flex them and they don't crack and I can put a dent in the edge corner with my thumbnail so I think they'll seal. I'll keep reading the plugs as I tune in to make sure I don't have an air leak.

 

[racerxxx]

I'd run them. How can the guy not make money? He's ordering parts from brp, 2 stroke, 4 stroke, Can Am, doesn't make a damn, 30% is 30%. My dealer orders one a week at a minimum. If I order Friday I'll have it Wednesday. It's a 3 day ship. They do all bulk orders, they're not just ordering a part every time the need one. And guys wonder why they loose business.

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[jimmaki]

I couldn't agree with you more. The profit margin should be the same for a 2-cycle part as it is for a 4-cycle one or an older part vs a late model one. Unless they have to expend more labor finding the older parts, But if they're normal distributors don't carry them, then just tell the customer the part is discontinued or back ordered or needs to be put on special order at an appropriate price. I took from the inference that older parts are mostly bought by DIY owners that maybe there's more of a technical support cost whereas the same part installed in their shop carries no tech support plus it turns back a labor charge so more profit. Even so, there are any number of online vendors selling old and new parts and supplying technical support and making money.

Anywho, I'm going to try using the old gaskets. They should be fine and I'll keep an eye on the plugs.