Author Topic: oppy porting and can?  (Read 8808 times)

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Offline revrover7169

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oppy porting and can?
« on: April 27, 2015, 12:39:56 am »
hello I'm looking to build a 42 cube oppy this being my first oppy building was looking for any porting pointers and any idea of what a good can would be to run in it? I am running a mod x chassis and looking to runs between 6000-7500 on the track even 5500 -6000. Any tips would be appreciated please and thanks
2012 nnylmr ss 2nd in points.
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Offline PJG56

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Re: oppy porting and can?
« Reply #1 on: April 27, 2015, 09:03:50 am »
Coffee can,soup can,etc.
Paul Guptill  (oppy) #238modX
2012 slmra mowstock champion(builder/owner)

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2013 ARMA national champion Mod-X(builder/owner)
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2014All American Champion FXT (engine builder)
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Offline Huffy044

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Re: oppy porting and can?
« Reply #2 on: April 27, 2015, 11:35:24 am »
Send a email to tdaniels@rocktenn.com and I'l show you what I do to flatheads to make them a little more powerful
VLMRA Singles Points Champion 2006
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Offline AZCOWBOY

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Re: oppy porting and can?
« Reply #3 on: April 27, 2015, 05:13:21 pm »
Send a email to tdaniels@rocktenn.com and I'l show you what I do to flatheads to make them a little more powerful

I also sent you an Email if that's ok....
Thanks

Offline revrover7169

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Re: oppy porting and can?
« Reply #4 on: April 27, 2015, 10:04:03 pm »
Ok I sent one other question with the porting is that is the stock carb good to run with the mods?
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Offline Jim Knutson

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Re: oppy porting and can?
« Reply #5 on: April 27, 2015, 10:36:36 pm »
Ok I sent one other question with the porting is that is the stock carb good to run with the mods?
not Tommy, but I have built a "few" oppy's, and all of them run 6500 and up rpm....still making power with stock re-worked carbs.
If you quit when you're behind, you will never win.

Offline revrover7169

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Re: oppy porting and can?
« Reply #6 on: April 28, 2015, 02:26:51 pm »
What do you mean deworked

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2015 mod x builder.

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Offline redline

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Re: oppy porting and can?
« Reply #7 on: April 28, 2015, 04:09:58 pm »
I believe that deworked is the improper use of twerking?
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Offline revrover7169

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Re: oppy porting and can?
« Reply #8 on: April 28, 2015, 11:24:13 pm »
Meant what kinda work is needed to the carb
2012 nnylmr ss 2nd in points.
2014 nnylmr 2nd Place points mod xr
2015 mod x builder.

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Offline revrover7169

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Re: oppy porting and can?
« Reply #9 on: May 02, 2015, 05:57:47 pm »
Another quick question for the oppy wizards. What's the recommended oil for performance built oppys
2012 nnylmr ss 2nd in points.
2014 nnylmr 2nd Place points mod xr
2015 mod x builder.

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Offline Jeff McKelroy

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Re: oppy porting and can?
« Reply #10 on: May 06, 2015, 03:33:37 pm »
With ARC rods, 5W30 Synthetic. Stock Rods, 10W30 Synthetic. Pressure lube 42 with stock rods, Synthetic 5W30 is better

Offline revrover7169

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Re: oppy porting and can?
« Reply #11 on: May 07, 2015, 03:17:48 am »
Now if I keep it splash lube how much can I be Burton myself? Because I can't find a pressure lube base to save myself.....I might wind up running arc splash lube rods.... Is that a bad idea? I had the block slightly ported and polished and thinking of a 212 can . is that to much for a splash lube oppy?
2012 nnylmr ss 2nd in points.
2014 nnylmr 2nd Place points mod xr
2015 mod x builder.

TC III

Offline PJG56

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Re: oppy porting and can?
« Reply #12 on: May 07, 2015, 05:52:18 am »
Now if I keep it splash lube how much can I be Burton myself? Because I can't find a pressure lube base to save myself.....I might wind up running arc splash lube rods.... Is that a bad idea? I had the block slightly ported and polished and thinking of a 212 can . is that to much for a splash lube oppy?

That combo works good (wonback to back ARMA nnational championships and the all aamerican with that combo)
Paul Guptill  (oppy) #238modX
2012 slmra mowstock champion(builder/owner)

2013 slmra mowdified champion(builder/owner)
2013 ARMA national champion Mod-X(builder/owner)
2014 ARMA national champion Mod-X(builder/owner)
2014 All American Champion Mod-X/CP(builder/owner)
2014All American Champion FXT (engine builder)
2014 All American 2nd place SP(builder/owner)
2015 All American 2nd place BP (builder/owner)
2016 OutlawTriple Crown FXT Champion (engine builder)

Offline revrover7169

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Re: oppy porting and can?
« Reply #13 on: May 07, 2015, 10:22:09 am »
But would I be hurting myself in the long run if I leave it splash lube
2012 nnylmr ss 2nd in points.
2014 nnylmr 2nd Place points mod xr
2015 mod x builder.

TC III

Offline Huffy044

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Re: oppy porting and can?
« Reply #14 on: May 07, 2015, 11:10:20 am »
As the pressure lube blocks dry up, you can think about useing an external oil pump to squirt on the rod? I was goingthis route sometime ago but never did it. I have seen others do it with great success?
VLMRA Singles Points Champion 2006
VLMRA Mini Champion 2007
VLMRA Sportsman Champion 2007
VLMRA Pro-X Champion 2008, 2009
ARMA Sportsman of the Year 2008
ARMA South East Region Mini 2009, 2010, 2011,2012
ARMA National Champion Mini 2009, 2010, 2011,2012, 2013
Maxton NC Model A Record Holder 118.54
VGMR 1932 Model A roadster world record 165.8

 

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