arrived fresh from treatshq yesterday and installed the same afternoon. pictures coming soon. here's a video of the maiden starting: (yes, i know the chain is loose)
arrived fresh from treatshq yesterday and installed the same afternoon. pictures coming soon. here's a video of the maiden starting: (yes, i know the chain is loose)
arrgh so sweet. Mine should be coming today. What carb/jet are you running?
in my enthusiasm and excitement i forgot to install about half the gaskets the first time around and i almost put it all together with only one wrist pin clip instead of two!
right now i've got a 15mm bing with a 90 jet in it.
ooo i got the same stuffs minus the exhaust (benji says hes getting some soon)
how fast is it running?
i have no idea. i'm still taking it easy to break it in... that and my puch doesn't have a speedometer. i can tell you that the difference in power is very noticeable.
you should adjust your drive chain tension, it's too loose. but the kit sounds great!
I will hopefully be getting mine today.
"i can tell you that the difference in power is very noticeable."
that just made me really excited. Thanks.
box fresh:
<<a href="http://www.flickr.com/photos/uhoh/2458003034/"; title="DSC_7734x by uhohphoto, on Flickr"><img src="http://farm3.static.flickr.com/2164/2458003034_a306bbeb49.jpg"; width="500" height="333" alt="DSC_7734x" /></a>>
stock 1.5hp piston and cylinder, 12mm bing(left)
metra 65cc piston and cylinder, 15mm bing(right)
<<a href="http://www.flickr.com/photos/uhoh/2457174317/"; title="DSC_7736x by uhohphoto, on Flickr"><img src="http://farm3.static.flickr.com/2127/2457174317_ef93feebd1.jpg"; width="500" height="333" alt="DSC_7736x" /></a>>
stock piston and metrakit piston, side by side:
<<a href="http://www.flickr.com/photos/uhoh/2457179769/"; title="DSC_7740x by uhohphoto, on Flickr"><img src="http://farm3.static.flickr.com/2326/2457179769_11c25a5085.jpg"; width="500" height="333" alt="DSC_7740x" /></a>>
metra piston installed:
<<a href="http://www.flickr.com/photos/uhoh/2457180785/"; title="DSC_7745x by uhohphoto, on Flickr"><img src="http://farm4.static.flickr.com/3020/2457180785_ed6b766a1a.jpg"; width="500" height="333" alt="DSC_7745x" /></a>>
ready to roll!
<<a href="http://www.flickr.com/photos/uhoh/2457183433/"; title="DSC_7748x by uhohphoto, on Flickr"><img src="http://farm4.static.flickr.com/3286/2457183433_3e3be98b4a.jpg"; width="500" height="333" alt="DSC_7748x" /></a>>
I love my Metra!
What base gasket did you use, the metal or the paper?
i used both the paper and metal gaskets, paper one against the case, then the metal one, then the cylinder. the piston just clears the exhaust port at bdc.
Make sure your head is lined up to seal the decompression hole on the cylinder. If it is on correctly, it will look like it is not on correctly (the fins don't match up). Otherwise you will have a big gulping air leak in your exhaust, and will be forced to run big jets to compensate and occasionally seize your crap like me (until I figured this out).
...are some heads different? i'm pretty sure i matched up the head correctly, and it went on the same way it did with the stock cylinder(longer fins are on the right-hand side of the bike)
I'm sure some heads are different, but the important part is to line up the little nub on the inside of the head (the mating surface) so that it blocks the decompression hole. Some heads from later High Torque cylinders don't have these nubs, so don't use them unless you seal the hole with jbweld or some such concoction.
ok, gotcha. this is what the head i used looks like, it has the little decompression nub on it. the fins do line up when i match the decomp nub on the head up with the decomp hole on the cylinder, so when i read your first comment about things not lining up when things were correct, i got a little concerned i was missing something.
<a href="http://www.flickr.com/photos/uhoh/2458367538/"; title="DSC_4866 by uhohphoto, on Flickr"><img src="http://farm3.static.flickr.com/2240/2458367538_0e0cb2c571.jpg"; width="500" height="333" alt="DSC_4866" /></a>
um... I us the 50cc high comp head and it is completely flat and smooth, but that seems to serve the same purpose right?
what kind of exhaust is that? I have basically the same setup but have a biturbo and use an 86 jet.
i would imagine a head without the raised gasket area would seal up fine no matter how many holes are on the top of the cylinder.
the exhaust is a proma gp
Like it? I am rather unimpressed with the biturbo/MK65 combo. It's better than stock, but not OMG better.
i love the proma gp. makes some killer torque. even with the stock cylinder it had some pretty decent climbing power.
did you match the case ports
naw, i don't feel up to it quite yet.
That's the nub! A high comp head is completely flat, so it should all seal up. Strange, on the few heads I've tried, if I was putting them on so the fins looked correct, then the nub was off to the side. Strange! Glad you've got it correct!
it still looks like its leaking... all that black shit around the one side- something is def. wrong.
hey graham,
yeah, with the stock cylinder and head installed, i was getting a slow leak of black oily junk from the head gasket area. from the limited riding i've done with the new cylinder it looks like the metra cylinder and stock head it looks like i still have the same black oily leak.
i think it basically comes down to the decomp nub area not sealing quite as well as it should. some of the oily discharge that would end up in the exhaust gets diverted a bit into that decomp hole.
here's a slightly better picture of the stock cylinder that shows the leaky area.
<a href="http://www.flickr.com/photos/uhoh/2458007556/"; title="DSC_7738x by uhohphoto, on Flickr"><img src="http://farm3.static.flickr.com/2070/2458007556_6aa7839db2.jpg"; width="500" height="333" alt="DSC_7738x" /></a>
O.K. Here's the set-up I just got from Treats this week. 65cc Metrakit, 16mm Dellorto, 16mm Intake, 10 assorted Jets, Maxi Head, and Estoril exhaust (still waiting on). This kit will be installed on my 1980 Puch Magnum 2-speed.
If anyone has any suggestions or comments before I get started, I'm all ears.
Please chime in. Thanks!
Steve
steve, do you know if the intake is tall enough for your two speed? i'm currently looking for a 16mm intake for my SHA and ZA50 as well...
mine went on but was kinda sideways
Andyh,
I really haven't tore into it yet. I plan on starting on it this weekend. I'm just going off of what Benji (Treats) told/sold me. He said these parts will all wok together with out any modifications. I'm taking his word for it. He has the intakes he sold me in stock. I'll let you know more as I get into it.
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