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Tech Information => General Help => Topic started by: ChaChi on October 27, 2012, 10:25:14 AM

Title: Info on Jet Ski Pistons for LTD and 550
Post by: ChaChi on October 27, 2012, 10:25:14 AM
Hey guys

I am wondering if someone could take the time to bring over the posts about this subject...

I am very interested in this, as parts for our old machines become more scarce, I am trying to stock up on parts I will need in the future, but I refuse to pay the price for these rare pistons...

Any information pertaining to this subject is greatly appreciated!

Cheers
Title: Re: Info on Jet Ski Pistons for LTD and 550
Post by: JosephNiemi on October 28, 2012, 03:57:41 PM
I just got the engine out of the 2nd interceptor i got from this guy,  the one he said had jet-ski pistons in it.  He told me he enlarged the wrist pin holes to make them work.   I pulled the head off and it looks like it has iron cylinders in it too.
Title: Re: Info on Jet Ski Pistons for LTD and 550
Post by: ChaChi on October 28, 2012, 05:01:21 PM
Iron bores with chrome rings is a good setup, skidoo has been doing it for years...

Sure would love to have a way to enlarge my own piston holes... hmmmmm... I need a mill! lol
Title: Re: Info on Jet Ski Pistons for LTD and 550
Post by: Interceptor398 on October 28, 2012, 05:27:53 PM
I have been collecting pistons and tools for this project for a couple years as I was a set for my self.  I also have a machine shop and now all the things needed for the project including a source for cast iron rings.  The rings still need to be modified to fit the jet ski pistons but when done the piston and ring set should be a drop in set.  I'm currently swamped with stuff that needs doing so it will not be until 2013 that I get a chance to try it in my soon to be 550 LTD.  Talk is cheep so wish me luck!!
Title: Re: Info on Jet Ski Pistons for LTD and 550
Post by: gixxer6 on October 29, 2012, 08:52:04 AM
From the old forum, I recall someone (MIDMICHIGAN550???) installing a 1mm bushing into the rod to shim the 18mm hole to fit the 16mm Jetski wristpin bearing...  I had thoughts of installing the Jetski rods onto an Interceptor crank (I don't know if they'd fit).  If used with sleeved cylinders, the jetski pistons and rings would be a drop in replacement, no modification required. 

There was also info on the old forum about Flannery installing 583 Ski-Doo pistons in a 550.  It'd be nice to have that info copied over too.   :)
Title: Re: Info on Jet Ski Pistons for LTD and 550
Post by: ChaChi on October 29, 2012, 06:41:09 PM
Was that bushing a total fix? or did he end up boring the piston wrist pin hole because of the bushing failing?

I am really interested in this... I like the fact I can order jet ski pistons out of a catalog for CHEAP! I have a buddy that can over bore cylinders for some beers and I can source chrome rings for the jet ski pistons easily!!! I wonder what kind of material he used for the bushing?

I appreciate the replies guys!

Cheers! 8)
Title: Re: Info on Jet Ski Pistons for LTD and 550
Post by: That Girl Racing on November 06, 2012, 03:42:43 PM
550 pistons are available from a couple of sources. I am sure Image still has the Wiseco's and J.C Automotive in Rochester has repops by Venolia. We should support people that have repops done. They are not getting rich off it.
Title: Re: Info on Jet Ski Pistons for LTD and 550
Post by: ChaChi on November 06, 2012, 05:55:16 PM
Please put up a website,email, phone number...

Do they have 440 ltd repops?
Title: Re: Info on Jet Ski Pistons for LTD and 550
Post by: gixxer6 on November 06, 2012, 07:52:02 PM
550 pistons are available from a couple of sources. I am sure Image still has the Wiseco's and J.C Automotive in Rochester has repops by Venolia. We should support people that have repops done. They are not getting rich off it.

Image has been out of the Wiseco's for a few years now, and the last time I talked to Bob he didn't have plans to have more made.  They were also all out of NOS rings...

I agree, we should support the guys that invested the resources into having them made.  However, from what I understand, all reproduced pistons so far have been designed to use NOS rings, which are just as hard to come by as the pistons. 
Title: Re: Info on Jet Ski Pistons for LTD and 550
Post by: That Girl Racing on November 07, 2012, 02:23:49 PM
Wiseco has reduced there mininum custom order to 10 from 25 and guarantees very quick turnaround time. It would be very easy to have a run made. Wiseco never used OEM rings on the 550 pistons. Why would they? Last I talked to Bruce he had OEM rings and was getting some made. There always seems to be a sentiment on this site against both Image and Bruce at JC that they were ripping people off with the prices of their custom pieces. I have never quite understood it.
Title: Re: Info on Jet Ski Pistons for LTD and 550
Post by: gixxer6 on November 07, 2012, 02:57:55 PM
The set of Image (Wiseco) pistons that I have use OEM rings.  Why?  If I remember correctly, it's because Wiseco doesn't make a 75mm ring that is compatible with chrome. 

Finding a way to use Jetski pistons could be much more economical then custom pistons.  Not to mention they are readily available. 
Title: Re: Info on Jet Ski Pistons for LTD and 550
Post by: 80 Kawi on November 07, 2012, 06:21:46 PM
I think Peter is correct. On top of that it will cost alot more to have the work done to a jetski piston then it would to simply source repops...check it out..
Title: Re: Info on Jet Ski Pistons for LTD and 550
Post by: 80 Kawi on November 07, 2012, 06:26:37 PM
sorry I'm not great at scanning and uploads  :-[.... you'll have to download and rotate it clockwise..but call Bruce at J.C. and get yourself some pistons...why bother messing around.
   He is a fine fellow to deal with, I know.  Paul
Title: Re: Info on Jet Ski Pistons for LTD and 550
Post by: ChaChi on November 08, 2012, 06:05:00 AM
I have always been more then happy with image and their prices and products...

I plan on doing a couple more orders this year just to get the sleds really nice...

What this other place JC?

Title: Re: Info on Jet Ski Pistons for LTD and 550
Post by: That Girl Racing on November 09, 2012, 02:56:04 PM
Does anyone have a loose 550 connecting rod they can measure up?
Title: Re: Info on Jet Ski Pistons for LTD and 550
Post by: gixxer6 on November 09, 2012, 04:18:01 PM
I have a couple cranks that need rebuilt.  I have never taken a crank apart short of replacing the outer bearings, can the crank wheel be seperated with a bearing puller, or do I need a press? 
Title: Re: Info on Jet Ski Pistons for LTD and 550
Post by: That Girl Racing on November 09, 2012, 05:01:53 PM
30 ton press. Cutting torch works also but makes it kinda hard to reassemble them. LOL
Title: Re: Info on Jet Ski Pistons for LTD and 550
Post by: Trucker on November 09, 2012, 06:48:06 PM
The quality of the pistons from Bruce at JC is better than the stock pistons and the price are not out of line. If you are trying to be cheap and own a limited production rare sled  you probably should not own one.
Title: Re: Info on Jet Ski Pistons for LTD and 550
Post by: That Girl Racing on November 10, 2012, 06:22:33 AM
Very well said Trucker!
Title: Re: Info on Jet Ski Pistons for LTD and 550
Post by: gixxer6 on November 10, 2012, 09:09:17 AM
LOL, there is definitely nothing cheap about owning an Interceptor! 
Title: Re: Info on Jet Ski Pistons for LTD and 550
Post by: Shawn on November 14, 2012, 07:29:16 PM
Last I recall the Venolia pistons from Bruce are $135 each, may have gone up same as everything else in this world ? The quality is unsurpassed. I don't care how meticulously you restore your Interceptor it will never be as pretty as one of those pistons right out of the box. He has the proper rings too along with lots of other rebuild parts like wrist pins, pin bearings, gaskets, fire rings, etc. Rechroming the cylinders along with buying these pistons and rings will be cheaper than the jet ski modded route every day of the year. If 398 can do all the machining himself, and use low buck swap meet parts finds and succeed in building a running engine he will spend less out of pocket. He will have used electricity, bought or made some cutting tools & fixtures (price a good reamer for those wrist pin bores & bushings ?). Nevermind he is a competent machinist and already owns most of the tools and machinery. While he was doing this work what else might have he been able to get done in the same time for a paying customer ? I like a challenge as much as the next guy but I call Bruce and buy the pistons & rings from him. Plus there are a few resurrected Interceptors around that wouldn't be on snow again if he didn't reman those slugs. I don't know what Bob at Image still has ? Do call him to ask though as he has always been a gentleman towards me and has some hard to get stuff.  The filler neck repair kits he sold were wonderful things. 
Title: Re: Info on Jet Ski Pistons for LTD and 550
Post by: That Girl Racing on November 22, 2012, 05:38:02 PM
If Bruce decides to give up on the Interceptor repop biz I will have a run of pistons made by Wiseco. But... not until then.
Title: Re: Info on Jet Ski Pistons for LTD and 550
Post by: gixxer6 on November 22, 2012, 08:54:44 PM
A friend just ordered a set from Bruce.  He said that Bruce doesn't stock them, he gets them per order.  And that the price is up to $175/piston, plus rings.  But he's been looking for pistons for awhile, and was happy to find them.  Props to Bruce for providing this service. 
Title: Re: Info on Jet Ski Pistons for LTD and 550
Post by: ChaChi on November 25, 2012, 03:08:57 PM
The quality of the pistons from Bruce at JC is better than the stock pistons and the price are not out of line. If you are trying to be cheap and own a limited production rare sled  you probably should not own one.

Who is Bruce? Does he do re pops for LTD's?

Title: Re: Info on Jet Ski Pistons for LTD and 550
Post by: 80 Kawi on November 29, 2012, 07:13:24 AM
A friend just ordered a set from Bruce.  He said that Bruce doesn't stock them, he gets them per order.  And that the price is up to $175/piston, plus rings.  But he's been looking for pistons for awhile, and was happy to find them.  Props to Bruce for providing this service.
...what I said..
Title: Re: Info on Jet Ski Pistons for LTD and 550
Post by: ChaChi on February 12, 2013, 10:31:52 AM
Who is bruce?
Title: Re: Info on Jet Ski Pistons for LTD and 550
Post by: Trucker on February 12, 2013, 03:50:17 PM
Who is bruce?
That is the guy to talk to at JC automotive in new york for 550 pistons/rings
Title: Re: Info on Jet Ski Pistons for LTD and 550
Post by: ChaChi on February 12, 2013, 06:31:04 PM
Any other contact info? Thanks for the reply trucker... Does he do LTD stuff too?
Title: Re: Info on Jet Ski Pistons for LTD and 550
Post by: sprocket on February 13, 2013, 01:48:25 PM
All this talk about a jet ski piston's I use to race the stand ups, most of your Wiseco pistons were one ring piston with a chromoly ring never 2 ring unless called for it, I still have all my books of these engines if you guys need any help on information
Title: Re: Info on Jet Ski Pistons for LTD and 550
Post by: Trucker on February 13, 2013, 04:40:46 PM
Any other contact info? Thanks for the reply trucker... Does he do LTD stuff too?
not that i know of. i had some pistons on ebay and not a single bid.
Title: Re: Info on Jet Ski Pistons for LTD and 550
Post by: Tory944 on February 24, 2013, 06:49:09 PM
   Bob @ Image Enterprises had "10" sets of "jet ski" pistons/rings/pins machined recently.  I purchased three sets and I believe he still has afew left... if you want to go this route.  I think he charged me $175 set.  I am running a set in one of my Interceptors with no problems.