pistons
Road Master
Joined: Sep 2013
Posts: 1,054
Likes: 441
From: Tejas
WOW!! Sixteen pages of posts on a cam swap and pistons. Don't ever ask about valve geometry then or we'll never see the end of it..
I use Indian Head Shellac on my base gaskets on my shovel and evo motors. No leaks.
Ever heard of the Hayden Oil Fix setup for cylinder base leaks? Eliminates that whole base gasket leaking issues as a rule. Never run 'em myself, as I have nothing in stock form they will work on, but have seen and installed them in others bikes.
Griz
I use Indian Head Shellac on my base gaskets on my shovel and evo motors. No leaks.
Ever heard of the Hayden Oil Fix setup for cylinder base leaks? Eliminates that whole base gasket leaking issues as a rule. Never run 'em myself, as I have nothing in stock form they will work on, but have seen and installed them in others bikes.
Griz
Banned
Joined: Dec 2015
Posts: 81
Likes: 0
From: In Your PC
I was going to suggest Gide made two columns on a piece of paper or a spreadsheet, a) a "good enough" budget job, and b) classy "proper job".
Allow space on the side of the budget job for additional savings possible by canny acquisitions, and for the "proper" job to lengthen as budget and temptation allows.
This first half of both columns is going to be the same; gaskets, specialist services, and labor etc. Therefore, it's worth seeing, and comparing the differences before deciding which route to go. It's easy to be overwhelmed by all the options and opinions; end up just spending your way out of or into a hole or on things you don't need. It's good to be clear and specific about where you want to end up.
Will an average rider be able to tell the difference between the two ... sure. In the short and long term.
Strip, clean and measure. Know exactly where you are at to begin with.
So, distractionary tactics aside, where have we actually got to on this practically so far?
Thread Starter
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Stellar HDF Member
Joined: Jan 2015
Posts: 2,504
Likes: 150
From: ct
Enough crap about burgers !!!! I make the best anyway !!!!
What I took from this cluster f#%k of a thread. I can't hone and install new standard pistons because the rings won't seat. So that means I can't reuse my pistons ,cut OR not for valve clearance because the new rings won't seat with those either.... Which I never heard before that you can't pull good pistons out of a good cylinder, hone, rering,and slap them back in and be reliable, but what do I know....
I'm not collecting my parts from the Indy and buying the ev27 so I can measure this now. As it doesn't make sense any more. So it looks like a"must bore" if you want the rings to seat.
So,mid usa pistons .010" os, Hastings molly rings, bore cylinders, .045" head gaskets,27 cam...
What I took from this cluster f#%k of a thread. I can't hone and install new standard pistons because the rings won't seat. So that means I can't reuse my pistons ,cut OR not for valve clearance because the new rings won't seat with those either.... Which I never heard before that you can't pull good pistons out of a good cylinder, hone, rering,and slap them back in and be reliable, but what do I know....
I'm not collecting my parts from the Indy and buying the ev27 so I can measure this now. As it doesn't make sense any more. So it looks like a"must bore" if you want the rings to seat.
So,mid usa pistons .010" os, Hastings molly rings, bore cylinders, .045" head gaskets,27 cam...
Seasoned HDF Member
Joined: Nov 2006
Posts: 12,878
Likes: 5,449
From: la la land jerzey
i use 3 light coats and each has to dry then a wait a day or two for it to totally cure on both sides - we have a location specific for this in the shop ( no Dust
its the way it should be if you pick it up and it does not stick to your fingers
Seasoned HDF Member
Joined: Nov 2006
Posts: 12,878
Likes: 5,449
From: la la land jerzey
Enough crap about burgers !!!! I make the best anyway !!!!
What I took from this cluster f#%k of a thread. I can't hone and install new standard pistons because the rings won't seat. So that means I can't reuse my pistons ,cut OR not for valve clearance because the new rings won't seat with those either.... Which I never heard before that you can't pull good pistons out of a good cylinder, hone, rering,and slap them back in and be reliable, but what do I know....
I'm not collecting my parts from the Indy and buying the ev27 so I can measure this now. As it doesn't make sense any more. So it looks like a"must bore" if you want the rings to seat.
So,mid usa pistons .010" os, Hastings molly rings, bore cylinders, .045" head gaskets,27 cam...
What I took from this cluster f#%k of a thread. I can't hone and install new standard pistons because the rings won't seat. So that means I can't reuse my pistons ,cut OR not for valve clearance because the new rings won't seat with those either.... Which I never heard before that you can't pull good pistons out of a good cylinder, hone, rering,and slap them back in and be reliable, but what do I know....
I'm not collecting my parts from the Indy and buying the ev27 so I can measure this now. As it doesn't make sense any more. So it looks like a"must bore" if you want the rings to seat.
So,mid usa pistons .010" os, Hastings molly rings, bore cylinders, .045" head gaskets,27 cam...
again - the 30 year old jug is no longer round all by its self - add to that you are changing the top and bottom platforms ( head and base gaskets )
evo jugs in my shop are torqued to steel plates then honed on a CK - 15 that mimics the rod / stroke ratio giving you the correct 60 degree cross hatch for a 1.87 rod stroke ratio
in the machine the cylinders after honing _ THEY are straight top to bottom - remove them from the torque palates and they NO LONGER are straight Because all evo jugs have a memory
the reason they are torqued in the first place in the machine CK - 15 as it copys the exact way the engine will be when it back together
Thread Starter
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Stellar HDF Member
Joined: Jan 2015
Posts: 2,504
Likes: 150
From: ct
the reason is you dont want to hear spend money on WHAT you think is still OK
again - the 30 year old jug is no longer round all by its self - add to that you are changing the top and bottom platforms ( head and base gaskets )
evo jugs in my shop are torqued to steel plates then honed on a CK - 15 that mimics the rod / stroke ratio giving you the correct 60 degree cross hatch for a 1.87 rod stroke ratio
in the machine the cylinders after honing _ THEY are straight top to bottom - remove them from the torque palates and they NO LONGER are straight Because all evo jugs have a memory
the reason they are torqued in the first place in the machine CK - 15 as it copys the exact way the engine will be when it back together
again - the 30 year old jug is no longer round all by its self - add to that you are changing the top and bottom platforms ( head and base gaskets )
evo jugs in my shop are torqued to steel plates then honed on a CK - 15 that mimics the rod / stroke ratio giving you the correct 60 degree cross hatch for a 1.87 rod stroke ratio
in the machine the cylinders after honing _ THEY are straight top to bottom - remove them from the torque palates and they NO LONGER are straight Because all evo jugs have a memory
the reason they are torqued in the first place in the machine CK - 15 as it copys the exact way the engine will be when it back together
Thread Starter
|
Stellar HDF Member
Joined: Jan 2015
Posts: 2,504
Likes: 150
From: ct
So I just got back from the Indy, took my old pistons back. Thought I would post better pics of them for the curious ones,(originals)...also, the thinnest part of the piston top is .27"thick, someone was asking...
Last edited by glidein wide; Jan 9, 2016 at 11:38 AM.
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Seasoned HDF Member
Joined: Nov 2006
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From: la la land jerzey
the location is not on the sides correction - it is but not the spot you think - the valve resessions are the deepest towards the inside top area of the oil ring actually, and those were never speced out for the cuts so it has no extra meat like the one we all use NOW - and its not an if it will be thick enough
BUT yours in your opinion will be fine or you would have dropped this long ago But you have not - hope it all works out for you - in the 2 weeks i am doing this i have never seen it happen but your convinced it will
BUT yours in your opinion will be fine or you would have dropped this long ago But you have not - hope it all works out for you - in the 2 weeks i am doing this i have never seen it happen but your convinced it will
Thread Starter
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Stellar HDF Member
Joined: Jan 2015
Posts: 2,504
Likes: 150
From: ct
the location is not on the sides correction - it is but not the spot you think - the valve resessions are the deepest towards the inside top area of the oil ring actually, and those were never speced out for the cuts so it has no extra meat like the one we all use NOW - and its not an if it will be thick enough
BUT yours in your opinion will be fine or you would have dropped this long ago But you have not - hope it all works out for you - in the 2 weeks i am doing this i have never seen it happen but your convinced it will
BUT yours in your opinion will be fine or you would have dropped this long ago But you have not - hope it all works out for you - in the 2 weeks i am doing this i have never seen it happen but your convinced it will
I don't have an opinion because I have nothing to base it on.... IT'S YOUR ADVICE I TOOK !!!