Topics

46

Spud Miller's Cave / fuel system o-rings PM

« on: February 09, 2022, 06:27:50 PM »

Going thru list of things to do to car and replacing all o-rings is part of it. Thinking about fact that I will have some nitro in it at times anw ondering if I should just go with  EPDM. Works with both nitro and alky, just don't like  any thing petroleum . Harder to keep system lubed when you can't add wd 40 or other lubes. Then again would 20 to 30% load  hurt Buna n o-rings?

What are running with limited loads of nitro?

47

Matt Shaff's Engine Shop / shout out to Jones cams in Denver NC

« on: January 29, 2022, 10:35:55 AM »

   posted January 29, 2022 11:00 AM
Just received cam back that I sent out for regrind. Degreed it in and checked all numbers dead on. Good service, right on schedule and great to work with. Can't ask for much more.

Even went above and beyond some. Seems first cam I sent him was bent and had been welded before. The welding I had no idea of,the bent I should have checked.Upon thinking back it was cam that was in motor when I kicked two rods at VIR. Because of some event before race I thought it was something other than the engine and stayed in it 300 feet after the problem. Still ran 5.90 at 230, but it was a costly run.
Guessing cam got bent in that 300 feet of light bulb short circuit. Spent two weeks trying to fix cam.Then sent them second cam and he ground it as requested, Never mentioned any extra for work trying to save first cam.

Now how cam runs is all on me before everyone goes there. My specs and even had them change their recommendation to what I wanted after discussion on duration and why I wanted it less than they recommended on exhaust.

48

Front Engine Dragsters / bracket racing a FED

« on: January 29, 2022, 07:28:40 AM »

 Yea I know you can't win bracket racing a FED, only heard it few thousand times. Why not? If any car runs the number and the driver hits tree it can win a bracket racing.Is that not the whole basis of bracket racing? (this can work for you, under estimated)

Ok disclaimer done.  Lets talk bracket racing with a fed.
One thing obvious or should be. The view of the race is totally different than in door car or RED. If you can't see the opponent he is way back. Seeing wheel to wheel is harder because they are way out there. Only way I see is a spot on there car when staged and use it.

 Pedaling a fed especailly with zoomies represnt different deals. One if you run Zoomies I promise you they will know if you are pedaling. That can work two ways.It can hurt you and it can help if using it to your advantage. Second Feds have more tendency to get bouncy if whomp whomping it. IMO brake is best way and then it probably needs to be soft.The reason I am adding a drag brake using brake handle and small caliper.

  The number one reason I was told will not work. Consistency. Feds are notorist for making a stupid run  more times than most. Mainly based on older cars with motor bolted to reand(slight exaggeration) and most the weight on rearend meaning very little on front wheels. I think key here is balance of weight and maybe softer leaves than would be for maximum performance. Was told buy a know it all in Kansas that 300 lb
minimum on the front end is required for good driveability. Who am I to question the man?

Running a fed by yourself present lots of things that you will need to be ready for. Buckling up is harder,then so is just getting into the seat.LOL Loading and unloading is a job.Same for all cars but more so with FED.

So guys who mainly bracket race a fed lets here your thoughts, strategy and or experiences.

49

Wanted to buy / 15x12 wheels

« on: October 25, 2021, 06:26:14 PM »

Looking for a set of 15x12 3 or 3.5" bs. I need something cheap for testing.If nice wheels I can go little extra knowing I can resale and get most money back if they don't work out. wydopn2312@yahoo.com, Cmconstruction2312@gmail.com.

50

Matt Shaff's Engine Shop / weight change before rebalance

« on: October 23, 2021, 10:22:25 AM »

How much weight change before you rebalance crank. New rods .020 shorter but heavier on small end. Big end almost same .By almost I mean less than 10g. Small end on other hand is 240g old rods 275g on new rods. My thought is I can probably get most of it off pistons or at least half of it. One reason I will be putting another set in later anyway. Probably heavier than ones in motor since .125" bigger Would rather do that than grind on new set of $1500 MGP rods. Guessing difference is billet rod just denser material and heavier. If matters its billet crank also. Motor will probably rarely see 8000 rpm and if so will be brief flash . New pistons might be a while since nobody has anything to make parts out off just like cam guys have no cores to grind. Unfreaking believable. Thanks Joe Idiot.

Piston, rings, pin and rod weigh 1955 total 35 more than old combo.  Pistons are not heavy but not lite. Thinking I can get maybe half that back there.Small end of rod shows biggest difference in two rods.  Ig can get 15 or so grams off then only about 15 to 20 off old and thats right at 1% ,which I would think would be non issue, might be wrong. Nobody local I would trust to balance this crank and KB doesn't do cranks anymore from my understanding. Plus KB was bought out few years back and another group running it.

51

Front Engine Dragsters / aluminum exhaust

« on: October 21, 2021, 02:52:51 PM »

Anyone here ever seen a set of aluminum zoomies? You know me always looking for something different to to try.

52

Front Engine Dragsters / setup to simply transmission removal

« on: October 05, 2021, 07:58:27 AM »

 Well time was I would pull trans in second just to look at something. Never was issue and easy as xxxx. Nowdays the transmissions are getting heavier even after money I spent on aluminum pump,aluminum valve body,lighter case,lighter pan,lighter bolts and anthing else to shave a once off. Either that or I am getting old.Nope thats not it. got to be heavier.

Wondering if any of you have a slick setup for making it easier for us highly mechanical educated fellow to pull trans. Sound better than us old body worn to xxxx from abuse guys.

53

Matt Shaff's Engine Shop / thi copper head gaskets

« on: October 02, 2021, 06:44:00 AM »

What is thinnest head gasket you have run or know of being ran w/o a big failure?

54

Front Engine Dragsters / adding front suspenion

« on: September 30, 2021, 02:10:22 PM »

 Ok I have looked at a lot of RED's with front suspension and talked with owners. All think it is awesome. While it might be ok for them I am not in favor of the coil over shocks I have seen on some. Diamond makes one that has shock under body and front is a separate cradle in the chassis for lack of better wording. Thought about that deal but tank and battery become issue.

  Idea I am working on is bottom rail with a bolted pivot and upper tube is slip with either coil over on lever of springs inline with top tube inside. Would not be visable with full body on. Would allow some movement and take out some of the spring in chassis on ruff tracks and maybe some of topend bounce if getting off throttle too quick while driving the stripe.

Ideas pr cpmment even if they are you are nuts, heck been called that cpl thousand times already.

55

Wanted to sell / `12' chutes

« on: September 21, 2021, 02:19:12 PM »

I have two `12' chutes for sale very good shape.One has pilot in very good shape other pilot not as good but  not bad. Asking 250 each chute and pilot.

56

Dan Dishon's Transmission Den / high gear with nitro

« on: September 19, 2021, 04:29:15 PM »

Any real downside to running high gear only with heavier loads of nitro other than heat in trans?

57

Wanted to sell / zoomies 2 1/4" bbc and 2.5" Hemi

« on: September 13, 2021, 07:30:55 PM »

I have cpl set of zoomies for sale.One bbc set with 2.25 pipes 40 degree layback and one set 2.5" for hemi with 45* laybacl. Asking 425 for bbc and 525 for Hemi/

58

Spud Miller's Cave / pump flow with od

« on: September 08, 2021, 05:53:18 PM »

Wondering does pump flow flow curve as far as going up proportional to increase in rpm if using a od drive. Say 14%  over will pump flow 14% more fuel?

59

Wanted to sell / Hemi cams

« on: August 29, 2021, 03:34:09 PM »

 I have 6 Hemi cams on shelf most are 45* ot std loc. Most are aroun296 at .050 and out of blower car. I will check them clost f someone ask about them seriously. Asking $250 shipped lower 48 or I want all I will do a package deal and you can have some cores for regrinds to meet you spec.s

60

Dan Dishon's Transmission Den / transmission case steel insert

« on: August 28, 2021, 05:10:43 PM »

 Bought used case and has a insert for it. Wondering how many run the insert.Its only 3 lbs and it is safer.But it is 3 lbs.LOL