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DrAllis View Drop Down
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Joined: 12 Sep 2009
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 17 Oct 2019 at 3:24pm
The thicker you make the head gasket, the harder it will be to hold. Same as a 1/4" one-wire hydraulic hose versus a 1/2" one-wire hyd hose. The smaller hose will tolerate a lot more pressure before it fails. Cut your piston tops down.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Fullpull Quote  Post ReplyReply Direct Link To This Post Posted: 17 Oct 2019 at 6:41pm
The gasket will be .155" does that seem workable ?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Fullpull Quote  Post ReplyReply Direct Link To This Post Posted: 25 Oct 2019 at 9:53pm
Suggestions on where to get a Allis 175 gas cam grind done on a G262 ?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 26 Oct 2019 at 4:43pm
30 or more years ago, I sent a 175 cam to Berry Cam  Lester Prairie, Minnesota for them to copy. I had them do probably a dozen regrinds for me over the years.  I understand they are under different ownership now, and have heard maybe they aren't as dependable as they used to be.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Fullpull Quote  Post ReplyReply Direct Link To This Post Posted: 26 Oct 2019 at 6:36pm
Thanks Dr Allis, I will see if I can find a shop with better review.
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Robacpuller View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Robacpuller Quote  Post ReplyReply Direct Link To This Post Posted: 27 Oct 2019 at 7:12pm
Quality performance products in Spencer Wi.
ph. Number 715 659 5152.
They did a 4 master grind on my D17 cam. Wi 50 does a lot with them.
Give me a P.M. or ur cell number. I will give u a copy of my cam card.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Fullpull Quote  Post ReplyReply Direct Link To This Post Posted: 27 Oct 2019 at 8:50pm
Thanks Robacpuller,do they have a good return on finished product time line? Do they do head work on AC G262 ?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Robacpuller Quote  Post ReplyReply Direct Link To This Post Posted: 27 Oct 2019 at 9:00pm
Call me at 608 228 4843.
I can fill u in.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Robacpuller Quote  Post ReplyReply Direct Link To This Post Posted: 28 Oct 2019 at 8:44pm
I can't get my text to go through. I am posting it here.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Fullpull Quote  Post ReplyReply Direct Link To This Post Posted: 10 Nov 2019 at 10:44am
If I have a allis G262 stock bore flat top pistons, 0.195" from top of piston to top of head,0.175" head gasket, 3.75"bore head gasket what would the compression ratio be?
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DrAllis View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 10 Nov 2019 at 5:16pm
11.67 to 1 with no valve protrusion.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Fullpull Quote  Post ReplyReply Direct Link To This Post Posted: 10 Nov 2019 at 5:49pm
Thanks DrAllis ,I am wondering with that setup how is it possible to start the engine with a snowmobile battery that has 320 CCA ?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 10 Nov 2019 at 7:06pm
You won't.  If that is all you can have for weight, you'll need a jump pack to get it started and disconnect it afterwards. You'll get tired of that after a couple of seasons and get a real battery in it.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Fullpull Quote  Post ReplyReply Direct Link To This Post Posted: 10 Nov 2019 at 7:48pm
We had 700 CCA battery and a 320 CCA we would start it then remove the 700 CCA battery used the 320 battery for our ignition, I stalled it on a pull and restarted with just the 320 battery and that was with the setup with 11.67 to 1.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote brad durst Quote  Post ReplyReply Direct Link To This Post Posted: 10 Nov 2019 at 7:54pm
i have a good running gas 190 engine for sale. its complete 800$ the fan to the pressher plate 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Fullpull Quote  Post ReplyReply Direct Link To This Post Posted: 10 Nov 2019 at 8:06pm
Sorry not interested in the 190 engine.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Fullpull Quote  Post ReplyReply Direct Link To This Post Posted: 13 Nov 2019 at 7:34pm
Was thinking someone would have an answer how it was possible to start the motor with 320 CCA battery with 11.67 to 1 compression,I am refreshing the motor now so if I did something incorrect before I would like to fix it.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote steve fischer Quote  Post ReplyReply Direct Link To This Post Posted: 20 Nov 2019 at 10:38pm
berry cam has two different grinds one is allis number 175 (very hot )the one you want is the model 175 gas grind
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Fullpull Quote  Post ReplyReply Direct Link To This Post Posted: 21 Nov 2019 at 11:35pm
Thanks for cam info. Mr Fischer
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 27 Nov 2019 at 7:18am
Why haven't you ran a cranking compression test on this engine???  You should have 240 psi or more, with the throttle wide open, all spark plugs removed and a battery charger on the battery to keep cranking speed fast and consistent.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Fullpull Quote  Post ReplyReply Direct Link To This Post Posted: 27 Nov 2019 at 7:50pm
I have taken the engine apart and will be doing the stuff to it that you talked about and see what results I will get and yes I should done some more testing.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 28 Nov 2019 at 6:06am
What exactly did you have your ignition timing set at and what octane of gas were you using ?? With 12 to 1 compression, it will require the timing to be LESS than the OEM timing of 25 degrees BTDC @ 2,000 RPM. More like 18 to 20 degrees BTDC and really should be done on a dyno of some type to achieve max power output.  Octane rating needs to be 110 or better for best results.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tbran Quote  Post ReplyReply Direct Link To This Post Posted: 28 Nov 2019 at 10:55am
high compression engines are for high rpms - not 1800 rpm luggers.  the peak cylinder pressure , unless controlled with octane and timing - as Doc sez on a dyno -  will not be kind to internal components .  
When told "it's not the money,it's the principle", remember, it's always the money..
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Fullpull Quote  Post ReplyReply Direct Link To This Post Posted: 28 Nov 2019 at 9:09pm
I was running 114 then 110 octane gas,do not have pto for dyno and running 3000 rpm maybe not a lugger.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 29 Nov 2019 at 6:06am
And what was the timing set at ?????
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Fullpull Quote  Post ReplyReply Direct Link To This Post Posted: 29 Nov 2019 at 6:12pm
I do not remember Dr Allis.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote SteveM C/IL Quote  Post ReplyReply Direct Link To This Post Posted: 06 Jan 2020 at 1:44pm
We had a 261 Chevy (big brother to 235) and was notorious for cracking pistons when run above 3000 rpm. Don't know if 235 piston is stronger but you may be asking for trouble.Just saying....
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Fullpull Quote  Post ReplyReply Direct Link To This Post Posted: 06 Jan 2020 at 7:22pm
The rpm will be 3000 max. We ran the other setup for 5-6 years at 3000 rpm and pistons look fine.
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