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Post by Lucass2T on Mar 5, 2015 13:48:20 GMT -5
never machine a nikasil bore top as the nikasil is lapped over the top to keep it from flaking off. Thats very good to know! Have the same problems with my metrakit 70cc! |
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Post by jareeb on Mar 7, 2015 20:06:43 GMT -5
engines all together. order a new hoca var. jets, hopfully running this week!!
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Post by jareeb on Mar 9, 2015 9:52:32 GMT -5
Squish is at .30mm so im thinking a base gasket under the spacer I made would put it around .7mm
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Post by jareeb on Mar 9, 2015 9:57:56 GMT -5
Anyone have an extra base gasket they could send me? Id rather not pay $30 from scootertuning
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Post by 2TDave on Mar 9, 2015 10:19:42 GMT -5
I've got some S6 base gaskets at home. I'll check what thicknesses and let you know.
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Post by jareeb on Mar 9, 2015 10:36:07 GMT -5
Thank you.
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Post by 190mech on Mar 9, 2015 11:24:48 GMT -5
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Post by jareeb on Mar 9, 2015 12:19:50 GMT -5
its an o ringed head. and the way ill have it is a base gasket - spacer - base gakset - cylinder.
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Post by 2TDave on Mar 9, 2015 17:19:34 GMT -5
I've got a S6 MkII paper gasket. It's .54mm. Don't have any aluminum shims to spare but they come in varying thicknesses from S6. I also have a Hoca 47 mm gasket that came with an o-ring from partsforscooters.com. It could be trimmed to match if you needed an o-ring also.
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Post by 190mech on Mar 9, 2015 19:04:43 GMT -5
its an o ringed head. and the way ill have it is a base gasket - spacer - base gakset - cylinder. 2 gaskets,is 2 gaskets,no matter how you stack them!Choosing a thicker aluminun spacer and 1 gasket with a sealer would be a better choice,,No gaskets with sealant and proper spacer would be even better!!  |
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Post by jareeb on Mar 9, 2015 19:57:20 GMT -5
Im gona see what thickness my parts store has. I dont wanna be waiting on parts but ill let you know tomorrow. Shoulda just made a 2mm spacer then. Haha
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Post by 2strokd on Mar 10, 2015 9:37:15 GMT -5
Only way ive gotten more than one to work is if i glued them together and let it set before even using it.
If it were me and its not gonna settle anymore ide try .3mm if its a 70cc race engine. My 95cc is set at .4mm now.
Edit: Drag race engine...
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Post by jareeb on Mar 10, 2015 10:54:35 GMT -5
nope its a daily driver. so i wana keep it loose.
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Post by 2strokd on Mar 10, 2015 13:44:38 GMT -5
nope its a daily driver. so i wana keep it loose. For sure then! Why not run a gasket on each side of the spacer John? Ive done so.. With the proper torque specs and a good, new gasket i dont think this is a problem. Also, even though its a o-ring head, you can ditch the o-ring for a .50mm copper head gasket and it will seal  |
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Post by 190mech on Mar 10, 2015 14:19:54 GMT -5
Heck,its worth a try..I'd recheck the head torque a couple times just to make sure its not settling..
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