quote:

Originally posted by pauley:
i would like to run one of those races at some point before i age out.

ep

I'm realizing I'm slowly losing what little talent I thought I had the older I get. This was my worst showing for this event & I had another that was close. This was my 7th appearance at the Spring Fling Million. The other 5 years I have walked away with small checks & one year I won more $$$ than what was invested in entry fees. That year I made/lost in the finals of Pro. I also went out in the 4th round of the Million. It was a good year. Out of 7 events raced, I considered myself competitive for 5 of them.

I'm running out of time & slowly losing my competitiveness. I think I have one more year for the Million & after that will probably stick with only entering the (3) 30Ks.

2BKING

quote:

Originally posted by Tex013:
Why did you change tyres mid event ? I have 2 sets , PBR 29.5s and GYear 30x9 .

I decided I was going to race the event on my 30x9 Hoosiers. The set I started the race on had about 70 runs on them. I had a brand-new set & I had Hoosier mount them at the track. I took my low run PBRs as a spare set.

My PBRs were my go-to radials but since running these C30 compound Hoosiers they fit my program just a tad better than the PBRs. They're a softer compound & I also tested the new Hoosier DR3 DOT radial 275/60R-15 that's a softer compound. I'm starting to like the softer compounds, but don't get the runs out of them like the PBRs.

2BKING

BKing
Gotcha , yeah i have used/been happy with Hoosier radials . Just not the 70-85 passes they give me .

Tex

Tex, I've been using nothing but radials for around 15 years now. I have never used a Goodyear radial & have only used the M/T PBR, not their Stock Eliminator radials. As for the Hoosier radials, I've used all the different configurations of the 30x9 that I know of.

The 1st set of radials I ever used was the Hoosier 30x9 CO6 lightweight. I made 150 passes on them & they still could have went another 25. I then went to the C07 standard weight & was able to get an easy 200 runs.

Sometime shortly after the M/T PBRs came out I put on the 29.5x10.5 It became my tire of choice, but it was only slightly better than the Hoosiers. I was able to get an easy 200 runs out of these.

The above was when I had my high 9 sec. naturally aspirated combo.

About 3 years ago I built the ProCharged combo & started out using the M/T PBR. I found; I can only get about 175 runs out of them & the sidewalls are gone but still had a good many runs left on the depth indicators.

I discovered the newer Hoosier 30x9 C30 compound radial that was built/designed for the NHRA's Factor Stock Shoot Out cars. They are a good fit for my ProCharged combo. There're a couple things I don't like about the tire. They're soft & I can only get about 100 passes on them; the depth indicators are gone. I had about 75 runs on the pair I changed out at the Spring Fling & wanted a fresh set for the big day. That was a mistake!

Recently I tested the new Hoosier DR3 DOT radial 275R/60-15. While I only have 3 passes on them, I'm impressed so far. We tested these on a TnT night & if I remember right the best 60' was a 1.378. We went back to the C30 compound for the next 2 days for our points races, the best 60' was 1.377. Pretty sure I can improve on the 60's with the DOT tires with a little less tire pressure. They're a 28x10 radial.

The reason I brought up the last 2 paragraphs about their newest compounds; they work great on our set-up. The thing I don't like is their secrecy on these radials, most notably the compounds. I guess it really doesn't matter, they work on my car.

Just thought I would share some of our radial data with you.

2BKING

BKing ,
thanks for that . In 20yrs racing I have only done 1 event on rags , radials for everything else on both cars I have raced . A 32 3 window coupe and now my Plymouth . Started on 275s but when I tried tbrake needed the 29.5PBR and stuck with it . GY is fast like Hoosier but a bit more sensitive I feel .Havent really done huge amount of laps before running back to the PBR after 3 punctures in 1 GY .
Went out Wednesday to a street car, minimal prep , meet to check I had solved the fuel system woes . Even had a DYO class running for a couple of dollars . Ran the PBR . Weather was nice da less so - 1900/2200 but 80% humidity & 94 grains . Plymouth was running mid 10.40s @128/9.
Ran good all the way to the final. Spun off line in semi & final . 7 minute turn around to final so added 1 number to allow for the extra heat (190), spun and couldnt quite get there ran 10.462 on 48 on brakes. couldn't quite clean all 3 members of same family . Got uncle in 1/4 father in semi lost to son in final .
Well I'm ready for NDRC Nitro Champs on 1-3 May .

Tex

Looks like you have about 5 more years' experience with radials than I do.

With the limited runs I have on the 275 DOTs, I'm impressed! They took the hit using the transbrake @ 3400 rpm/3 lbs. of boost. I'm pretty sure these 275s may only last 100 passes, only time will tell.

Below is a link to my 1st post on the 275s in case you didn't see it.

Good luck on your race 1-3 May!

2BKING



https://drr.infopop.cc/eve/for...077031307#7077031307

This message has been edited. Last edited by: B KING,

Happy Saturday evening everyone. kinda long one here, but it is a race weekend recap, so here goes the good-bad-n-ugly of it. Race #4 for this middle aged rookie is in the books. 1st round clown again, but this time wasn't necessarily a mistake, but more lack of experience and seat time thing. Had a private test session with several other CCRA folks Friday afternoon/evening. Prior to this, I had the broken tranny fixed and resurfaced flywheel & pressure plate. Put more base pressure in clutch as well. 1st run, 60' was slower than I hoped. Added more base to it and spun pretty bad next pass, but once it hooked, it booked pretty damm well. They had the 1/4 mile timers on, so next runs, I decided to run it through the 1/4. Run 3 was almost great. Car hooked well, 60' improved, ran 6.15 at 112 in 1/8 and 9.67 at 137 in 1/4. Unfortunately, the engine shut down just before the traps. Got pulled off on the return road and found a wire pulled out of its connector on the MSD. I forced it back in and the engine fired back up. Turned out, it's the hot wire for the tach. Can't see any reason the tach hot wire would shut me down, but also didn't find any other reason for it. 4th pass was supposed to be my last, but turned into a toss out. They prepped the right lane differently, for a couple small tire no prep radial guys, and didn't let me know to go to the left. Radial guy in front of me got down like a bat outta hell. Me, I blew the tires off. Came back later for a final run, car shut down again just before 1/4 mile traps. This time it stumbled a couple times before dying. Got out on return road and checked the formerly broken wire, and it's still good. Turned on fuel pump, hit throttle a few times and fired up. Now I'm thinking I'm running out of fuel in high gear at 8000 RPM. No problems with 1/8 mile, so I left it alone. Gonna troubleshoot that tomorrow. Has 6.5lbs fuel pressure, so next check will be float level. Maybe bump the pressure to 7lbs? GoPro battery died, so I haven't watched my in car video yet. Can't find my card reader adapter either.

Todays race, no problems keeping the engine running. Found my iphone roll bar mount so I could get video today. 1st time run went well. Ran 6.21, and from my in car video it appears I did my job pretty well. Slower 60' than I expected, since it felt like it hooked up well. Figured maybe the hotter temps did that. next pass was 6.17. Felt it hook harder this time, and again, the in car video makes me look like I'm learning how to drive. 1st round eliminations and no bueno... Did everything the same and car bogged big time at launch. Once it came back up, spun the tires and missed my dial in by a lot. The consensus from thinking about it and talking to a couple seasoned veteran racers, more launch RPM probably would have eliminated the bog. That may also have affected the run in other ways as well though. Paying better attention to conditions may help in my decision making too. All in all, Had a great Friday and Saturday. Tomorrow and throughout the week will be troubleshooting and hopefully routine maintenance. Looking forward to my next race. All weekend so far, I've felt like a little kid having fun for the first time in forever. Being away from racing for so long, and now being back in the saddle is pretty damm great,,, even if I'm not turning on win lights right now.

Missing tomorrows race on purpose. Our granddaughter is doing baby/child dedication at church tomorrow. Can't miss that. Hope y'all are out there winning more rounds than I am