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Messages - msundstrom

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31
Spud Miller's Cave / Re: Not seeing any gains !
« on: October 29, 2019, 05:33:02 PM »
33% and under my alcohol tune up and nitro tune ups were the same. My experience is the more nitro the greater effect on the converter. In my case I slowed down the more % I added.
Mark S

32
Spud Miller's Cave / Re: Not seeing any gains !
« on: October 28, 2019, 06:29:05 PM »
What jetting/ timing changes did you make for 25% if any?

33
Spud Miller's Cave / Re: Main jet and nozzle size
« on: May 15, 2019, 06:42:28 AM »
What percent are you now ?

34
Electronics / Re: Wiring a relay
« on: February 19, 2019, 03:58:00 PM »
If the pin numbers on the bottom of the relay are 30, 87,87A,85 & 86, then pin 85 and 86 are the controlled pins, low amp(B+ and ground) which when completed, pin 30( main B+, your high amperage source) will connect to pin 87 (your high load component), 87A is connected to pin 30 when the relay is off.
Mark S

35
Matt Shaff's Engine Shop / Re: Style oil filter
« on: February 17, 2019, 11:20:20 AM »
I use an Oberg, you can catch many things when they are small before they become catastrophic.

36
Spud Miller's Cave / Re: Time for some changes
« on: December 21, 2018, 09:26:44 AM »
As a side note during this I did try different oils. Brad Penn and Valvoline VR1, had the ring issues with both but never a bearing issue with either. Glad to help.
Mark

37
Spud Miller's Cave / Re: Time for some changes
« on: December 18, 2018, 02:15:52 PM »
When looking for information on the top secret/dirty word "nitro" anything, you don't find much outside of Spuds Nitro Notes which is an awesome read and thank Spud for putting Facts out there instead of voodoo fear. Spud has had good results but believe he has access to a knowledgeable machinist. In hind sight I should have talked with his machinist. Guess he is still alive so I guess they don't kill you for divulging the secrets. I know enough to be dangerous but will give you what I know and have learned and don't want to contribute to the voodoo so use this with caution.  Running even smaller %'s I noticed cylinder wear and an etching (burnishing) at the top of the cylinders and ring seal falling off, had no problems prior using methanol and  a zero gap Total Seal Top ring. Lots of "can't use a zero gap second ring with nitro" stuff out there but everything usually was referring to  high %'s , blown & Hemi. Although there were some that had success using gapless second.?? Most guys were using a Dykes top ring. The ring flutter issue makes sense to me but I'm NA and low %? So went away from the zero gap to the TNT ring and more % and brought piston clearance to .010" from .007". Rings went away quickly and the etching was very bad. The etching area is in the upper 1.5" of the bore and the crosshatch is gone. The lost crosshatch I knew was lack of lubrication but why? The light came on when a gentleman asked me the question, "what is nitromethane used for"?? A Solvent: which changed my thinking. So the oil is being washed off from the nitro, ok but how to fix it.  I had previously had the cylinders prepped as per ring instructions (320 grit stone). As Jon says call the ring manufacturer! The crosshatch roughness ( Ra, Rz, Rpk, Rk, and Rvk , go to any of the ring sites and they explain the differences) becomes the important numbers rather than the stone grit. Not all machine shops have the tool to determine those values other than the Ra value. I did not have convenient access to a machine shop with this ability or any knowledge of nitromethane living here at the edge of the earth so I have improvised and did it myself. With help from Total Seal they suggested using a 220 grit stone and plateau hone. I finally ended up using a 180 grit stone and 10 reverse passes with a plateau hone.  I am using a standard tension oil ring. I have not had a loss of ring seal nor oil on the plugs to this point. Hoping to get 2 seasons as my indicator of success for me. There are a lot of variables with this, a big one is the block you are using. I'm using a Mark IV block which is very soft and added to my problem; a Dart, Merlin, Brodix, etc are different animals. Again have you or your machinist talk to the ring manufacturer & ask questions. I did talk to J&E about using a moly ring for nitro and he quickly said it would not work but could not give me details(voodoo??). I did read that Top Fuel used top and second rings both moly but said they delaminated quickly( believe in a pass) but apples to oranges. The reason why I used the TNT ring was no one else made a 4.350" x 1/16" ring other than J&E which was moly. 
Thanks
Mark

38
Spud Miller's Cave / Re: Time for some changes
« on: December 17, 2018, 09:23:02 PM »
Do you want the short answer or the long answer?

39
Spud Miller's Cave / Re: Time for some changes
« on: December 03, 2018, 10:13:44 AM »
I ran lateral gas ports in my NA BBC on 45% last year. I had ring seal issues before using a TNT Total Seal ring, did cylinder prep differently and added the gas ports still used TNT ring. I had to pull 3 degrees timing, pull 3% nitro to 42% and lean it 1 step to slow the car down to 7.50s. I have not seen any negative issues with the gas ports to this point (30 passes), the jury is still out though. I think cylinder finish is very important and different with nitro vs. methanol.
Mark S

40
Front Engine Dragsters / Re: Starting Battery Setups/Carts
« on: August 06, 2018, 10:34:09 AM »
This is what I use which sounds the same as Paul used. It is quick,easy on the crew, inexpensive and lasts about 6 years.
Mark S

41
Best advice I can give is send your pump, injectors and bypasses to Spud at Fuel Injection Enterprises and have it flowed and the tuneup will be very accurate, no guessing and no broken parts and it's very inexpensive.
Mark S

42
Don't know your details that Paul brought up but mine for straight methanol was 28% +\-BV leak, 130+\- main jet with 2 psi idle bypass on a 6.08 gpm pump at 4000 rpm, throttle plates at .003 Hilborn 2 7/16" on a 467 inch BBC.

43
Is distributor timing on, lots of fire out the zoomies is a tooth retarded timing? BV leakage%?

44
Dan Dishon's Transmission Den / Re: Transbrake
« on: June 30, 2018, 12:21:04 PM »
Had the same issue once, had some clutch material come off and restricted the filter, same as opa1 said low pump pressure.
Mark S

45
Spud Miller's Cave / Re: Cranking compression and nitro
« on: May 30, 2018, 12:12:42 PM »
Intake valve closing point and static compression need to be considered together.

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