Potential Group Purchase - Wiseco GS650 741cc pistons

Thanks for the replies
I already asked to Wiseco, and the answer was the same, but The price was not...Chuck78, what was the price for 1 set please? I am, maybe, finding other people....

[Phred]

I don't know what the import laws are in the US but when I order parts from Z1 they ship through someone else. On the label it states "Old motorcycle parts" Whether the parts are new or not seems to make no difference. Have never got hit with import duties when that is on the label. Might be worth checking out what the regulations are regarding import duties on vintage parts.

ok thanks!
because I'm located in France, I'll ask on some local suzuki gs forums, to see if some people are interested...

1 question: If I want a set now, is it possible? If yes, what is the price without waiting? with waiting?
thanks

You would need to ask Wiseco those questions. We are the customers, not the seller. Ace worked with them for one large purchase that went very well, and you or someone would need to arrange future purchases.

ok thanks!
because I'm located in France, I'll ask on some local suzuki gs forums, to see if some people are interested...

1 question: If I want a set now, is it possible? If yes, what is the price without waiting? with waiting?
thanks

[Chuck78]

Hey all, sorry for my delays getting back on here. Gaskets got hung up in customs (which I got slapped with a big customs fee on the entire purchase price), I got real sick after being worked to death, and am just getting free time again for about 36 consecutive hours (FINALLY!).

Gaskets have arrived here & are in my hands, although unfortunately I may send some back due to quality control issues with the left and right alignment dowell holes in the MLS gaskets being slightly off (bores not centered due to this, & they won't drop over the dowels without some trimming or dremel sanding drum if DIY).
Until I noticed that, I was astonished at the overall product sitting here on my bench which we have for our builds.
I assume that everything would be dead on from the OEM gasket as templates, but apparently there is a bit of margin of error that needed to be spoken of with the dowels to the bores, while we were in the spec/design phase. I didn't want to ship the whole lot back until I had examined every one while sitting on a 650 cylinder block to verify alignment.

Originally John had said he will send me a test gasket after the first one is done to make sure everything looks good, but did not do this and sent the entire batch at once.

Stay tuned as I sort this out, and if this is substantially holding you up substantially and you need one immediately, I will send them out accordingly prioritized if you EMAIL me at my yahoo address (GS inbox = perpetually full of useful saved information)
I don't see an issue with very carefully trimming them with a Dremel sanding drum and fitting each one to the block, as the alignment dowels were too close together, therefore should be a non-issue to trim them out and have them located perfectly, but that is a lot of work on my end!

Don't worry about shipping or any other fees from customs, that's all on me in a remorseful attempt too make up for me not being able to adequately handle this purchase in my very cluttered and demanding life (one of these days I will learn to say NO but it's hard when it's family and close friends and career always needing everything I've got to give).




Boris:

If 2 other pepole come along and want 1 set of pistons each, Wiseco would be happy to make a batch of 12 pistons total (3 sets) or more. The more, the better the price per set.

any chance to order sets of pistons again??

[frankenwabbit]

any updates? have the gaskets arrived to be shipped out to us? I finally got off my duff and separated the barrels from the donor motor. Now to send to a machine shop.

ok, nice work
So may it be possible to make us a short résumé with all the links and prices to be able to see, quickly, the prince for a set of 4 wiseco pistons with wiseco ref, and also for the head gasket? This topic is going bigger and bigger and if someone who did not follow the whole topic is coming here and want to buy something, I find it hard to find prices, ref, etc... Or you can add it to the first message of the topic... thanks a lot!

[Chuck78]

Gaskets are ready to ship!!!!

They will be shipping all of the U.S.A.-bound orders to me first, then I will mail out individually, but to save from havimg to pay international shipping twice on the remaininf 3 gaskets, I am having the two non-USA orders for Tooheys and Gilldog shipped direct to Australia (1.7 & 1.8mm) & the U.K. (1.8mm)

LOOKS GREAT!!!

[frankenwabbit]

thanks for the update chuck

[Chuck78]

I fixed the file attachment of the invoice receipt for the gaskets. see above screenshot

[Chuck78]

Hi Chuck,


I just found an image of an MLS we made for a similar motorcycle, not sure which model though.


Will you be happy with embossing like this?


Regards,


John

See quoted email above. I replied that this looks fantastic aside from as we discussed the outside 4 corner studs need embossing around them as they also double as an oil pressure feed passage. I also said that I prefer the cam tunnel have an embossing mirroring its shape, but that this style should not pose any problems.

[Chuck78]

Any updates? Is the headgasket order ready to go?

Gasket order has been placed, but since GS550/650 gaskets are a new one for them, they have no existing tooling to use, and have to make up the tooling do produce these, so it will take a bit longer due to that.

Also, their website states that quotes are only good for 30 days...
He re-quoted me $120 & $130 based on thicknesses, each gasket, quantity of 15 total - so even with the price break.
I managed to compromise and get the price down some, but not to the original $85 per gasket. When it comes time to ship them, anyone who feels generous enough to throw in another $15 or so each, please do so, as I have paid the difference out of pocket.
To get it to that price, beyond haggling, we had to opt to have all external rivet tabs to secure the multiple layers together, vs having the studs and bolt holes "bushed" - one outer later of the gasket would have the hole cut smaller so that the extra material would basically be riveted through the other layers by pressing and folding it through. Cometic does all external tabs only on theirs anyway, and I think after the fact thus was the better choice to begin with in terms of uniform thickness and clamping forces.

They will still be embossed in critical areas, and hopefully if their engineering department sees it within the price quote, they will emboss the outside perimeter as well.

See attached.




Not sure why the resolution and size of that got downgraded (.png file?), I'll upload a full size from my computer when I'm home from work

EDIT - Resolution should be fixed after exporting PNG to JPEG format and resizing

[frankenwabbit]

Any updates? Is the headgasket order ready to go?

[Chuck78]

Long story short, I am estimating from mockup data, on a GS550 bottom with 650 top end, we will get the following:

1.6mm uncompressed MLS head gasket + undecked block:
.041" - .045" quench

1.7mm uncompressed MLS head gasket + undecked block:
.045" - .049" quench
(.041"-.045" if decking .004")

1.8mm uncompressed MLS head gasket + undecked block:
.049" - .053" quench
(.041"-.045" if decking .008")

*for planning to deck (surface mill) head gasket surface of block to clean up, add 0.1mm head gasket thickness for every .004" you want to deck off block.
**best mock up pistons in block and torque down (without base gasket?) to truly measure exactly how much you can have milled off of the block deck, but I feel this a safe rough suggested guideline
***I've got a 0.12mm variance between the two 650 cylinders I've got here, and between Suzuki_Don's very well measured/documented setup, and Andy Ace07's deck height mockup (.036" above deck, no gaskets), I've also arrived at a .10mm variance between engines - hence the .1mm/.004" differing range in quench figures)






For GS650 bottom, probably best to go with 1.2mm or so and mock up bored cylinder to measure how much you should mill off to get to at least under .050" quench (zero deck)
If I were to take a wild guess, I'd venture to say a .2mm (.008") light skimming off the 650 engine block deck (on a 650 bottom) would give .040" quench with a 0.9mm head gasket.
I HAVE NOT RESEARCHED THIS!
Getting a 1.2mm head gasket and just about zero decking the block, whatever that may take (.45mm milling I'm taking a wild guess at) would also give you a good number around .043" quench.



GS750 pistons in 650 block on 550 w/550 big port head:
I still have not verified the valve pockets or chambers will match up enough to work without modifying the pistons, but I think this can be done. The 750 piston compression height is exactly 1mm shorter than the 650 pistons, however.