Mine doesn't care for anything less than 3800.
5.57 gears will cover up for too little converter somewhat. The other side of the coin is more converter will probably make it hard to hook consistently. Then you add more tire.
It's fun to experiment.
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| 1968 Valiant Ruster Racer IRWIN PA https://slantsix.org/forum/viewtopic.php?t=36132 |
Page 81 of 85 |
| Author: | Greg Ondayko [ Thu Nov 03, 2022 8:25 am ] |
| Post subject: | Re: 1968 Valiant Ruster Racer IRWIN PA |
Quote: Looks like a pretty nice cam, but you can do somewhat better. No way you should be running that will less than 4000 stall.
Yes, Static CR is 13.5 :1 - Yes it is a Mike J. Head.Static CR is 13.5:1? What is your max valve lift (set by springs used and valve spring retainer/guide clearance)? I guess it's a Mike J head, but I think anything over about 0.560" lift will not help you more. I'll look at Oregon lobes... Lou I would have to go back to my hand written notes somewhere or Pull Valve Cover off to see what the Lash is.. so on paper.. 0.550" Valve Lift @ 1.5 Rocker Ratio. I am using a 1.6 Rocker. = 0.584" Valve Lift 0.584" - 0.028" Lash = 0.556" Valve Lift (on paper / Estimate) Greg |
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| Author: | Greg Ondayko [ Sat Nov 05, 2022 8:33 am ] |
| Post subject: | Re: 1968 Valiant Ruster Racer IRWIN PA |
At the Track today... It seems that I would call this converter a 3000 RPM Stall unit. Greg |
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| Author: | Rick Covalt [ Sat Nov 05, 2022 9:00 am ] |
| Post subject: | Re: 1968 Valiant Ruster Racer IRWIN PA |
So how did the car run for you? |
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| Author: | Greg Ondayko [ Sat Nov 05, 2022 9:27 am ] |
| Post subject: | Re: 1968 Valiant Ruster Racer IRWIN PA |
Still running First run off trailer is garbage.. but over a 10th faster on the 60' from last week with about the same barometer.. Successive runs may be better yet.. we shall see. Greg |
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| Author: | Dart270 [ Sat Nov 05, 2022 1:30 pm ] |
| Post subject: | Re: 1968 Valiant Ruster Racer IRWIN PA |
3000 seems low for that motor, yep. I may grab that one from ya, if yer sellin'! Lou |
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| Author: | slantzilla [ Sat Nov 05, 2022 2:10 pm ] |
| Post subject: | Re: 1968 Valiant Ruster Racer IRWIN PA |
Mine doesn't care for anything less than 3800. 5.57 gears will cover up for too little converter somewhat. The other side of the coin is more converter will probably make it hard to hook consistently. Then you add more tire. It's fun to experiment.
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| Author: | slantzilla [ Sat Nov 05, 2022 7:36 pm ] |
| Post subject: | Re: 1968 Valiant Ruster Racer IRWIN PA |
I have the shortblock that goes with your head Greg. Next time I go to the shop I'll see if the cam card is in the box with it. |
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| Author: | NCDemon1971 [ Sat Nov 05, 2022 9:55 pm ] |
| Post subject: | Re: 1968 Valiant Ruster Racer IRWIN PA |
Are you still using the 500 Edelbrock carb?? |
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| Author: | Greg Ondayko [ Mon Nov 07, 2022 8:27 am ] |
| Post subject: | Re: 1968 Valiant Ruster Racer IRWIN PA |
Quote: Are you still using the 500 Edelbrock carb??
Hello, No I have been running the 750 Edelbrock AFB for a few years now. Greg |
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| Author: | Greg Ondayko [ Mon Nov 07, 2022 8:36 am ] |
| Post subject: | Re: 1968 Valiant Ruster Racer IRWIN PA |
3 runs from Saturday: 60'____1/8 Mile____MPH 1.6168____7.5682____88.170 1.6465____7.6004____88.100 1.6139____7.5825____87.690 Had a Pretty Stiff Headwind all day say ~10-20 MPH. Going back to my notes I must have had a better Degreeing on the cam in 2016/17 as well as the PTC Converter which must stall at more than 3000 RPM. This weekend, The Barometer was nowhere near the Level from my run notes but I did not seem gain anything going from the 4.56 to the 5.57 in the 1/8th - probably too many changes and iterations to compare. My Ideas: Need a Looser Converter Check Cam Degreeeing.. maybe for more Top end / revs Tire Size? Maybe try Ø29" or Ø29.5" I have Run Ø28" For well over 10 years. Greg |
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| Author: | NCDemon1971 [ Thu Nov 10, 2022 10:17 am ] |
| Post subject: | Re: 1968 Valiant Ruster Racer IRWIN PA |
Since I plan on doing away with the motor mounts, could you tell me about the thickness and how those ears are mounted? |
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| Author: | Greg Ondayko [ Sun Apr 16, 2023 4:06 pm ] |
| Post subject: | 4/16/23 |
4/16/23: I removed maybe 12oz. Metal from the underside of the car.. I need to get back to doing more of that. Also swapped the 5.57 out for the 4.56 gear. Getting Ready for the spring mason dixon race. Just need to put some fuel in it add the side skirts set tire pressures and load it up on the trailer. |
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| Author: | Dart270 [ Mon Apr 17, 2023 5:41 am ] |
| Post subject: | Re: 1968 Valiant Ruster Racer IRWIN PA |
Getting the old bear out of hibernation... Hope to see you at M-D! Lou |
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| Author: | terrylittlejohn [ Thu Apr 20, 2023 3:24 am ] |
| Post subject: | Re: 1968 Valiant Ruster Racer IRWIN PA |
go get-em! haha! hope the season is easy on parts! |
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| Author: | Greg Ondayko [ Mon May 08, 2023 6:36 am ] |
| Post subject: | 5/8/23 |
5/8/23: Ruster is once again productive as a slant 6 racer and keen bracket car when the driver does his job. It's always its good to be good, and sometimes its good to be lucky. I was lucky but not good this weekend. I was able to make 18 Laps on 2 days of racing both 1/4 Mile and 1/8 Mile. Barometric pressure, humidity, temperature were all favorable, not excellent, but good. Ruster Ran (Sunday in reverse chronological order) 11.82 -(Slant 6 Final) (Ruster gets the runner up.. on a double breakout that I was just 0.0013 too fast for   )11.85 11.81 11.84 11.81 11.82 11.85 11.85 11.87 (first pass / cold) Saturday 7.39 (Slant 6 Final) (Ruster wins) 7.40 7.39 7.44 7.42 7.42 7.42 7.43 7.49 (First pass off trailer / Cold) Mason Dixon was a fantastic event and I will predict the Largest gathering of slant 6 drag racers this year in 2023, with 7 Cars for Saturday's 1/8 Mile Race and 9 cars for the Race on Sunday. I have a list of stuff to work on, Alternator / charging issues / Swapping to a better alternator? Motor mounting / Motor plate moving issues. other small stuff. Trying / buying a different converter. Greg |
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