{"id":731,"date":"1998-06-28T12:07:28","date_gmt":"1998-06-28T12:07:28","guid":{"rendered":"http:\/\/roadraceengineering.com\/blog\/?p=731"},"modified":"2011-08-28T12:17:04","modified_gmt":"2011-08-28T12:17:04","slug":"marc-s-pomona-in-june-awful-new-clutch-but-12-16-114mph","status":"publish","type":"post","link":"http:\/\/roadraceengineering.com\/blog\/1998\/06\/28\/marc-s-pomona-in-june-awful-new-clutch-but-12-16-114mph\/","title":{"rendered":"Marc S – Pomona in June – Awful new clutch, but 12.16 \/ 114mph"},"content":{"rendered":"
<\/div>

The good:<\/p>\n

– The Pomona guys said it was the smallest turnout all year. We averaged
\na run per hour for the first few hours, and then around 2:40pm it started
\nto become “run as often as you want”… You just ran & got back in line
\nagain (with between 16 – 40 other cars!) So we ended up paying under a
\ndollar per run if ya don’t count the race gas :)<\/p>\n

– Scott Terrace ran some awesome times, especially with his very short
\nlist of mods… 13.3’s! This is right up there with those ol’ East Coast
\nstories of putting under $1000 into a DSM & being at low 13’s… Scott is
\ngoing for 12’s soon on the ultimate budget car!<\/p>\n

\"\"<\/a><\/p>\n

– Bryan actually showed this time (hehe) and broke 13’s on his 14B car!
\nYeeha!<\/p>\n

– Had a first-timer come (I just know I’m gonna spell this wrong…
\n“Shino?”) and do awesome! Shino has a 2G FWD with limited mods and by his
\n3rd launch he had pulled a 2.3 60-foot time! He later pulled at least 2
\n2.2 60-foot times! (1\/4 mi time was 14.6 I believe). Fantastic times for
\na FWD & a first time at the track. Congrats!<\/p>\n

– I had a new personal best & my MPH increased substantially.<\/p>\n

The bad:<\/p>\n

– Most of my times! Yeah, I know these times are faster than most, but
\nhonestly the car has more in it so considering I started the day at a 12.19
\n@ 114.3 w\/ a 1.857 60 foot time, the day was very disappointing for me.<\/p>\n

The ugly:<\/p>\n

– My 60-foot times were horrid. I could not launch the car worth a damn
\nwith the new clutch. I wanted to rip that thing out and torch it. Even
\nwith *11* runs (towards the end I was trying ANYTHING to see if I could
\nfigure out a method to launch) I couldn’t do jack on my launches… Here are
\nsome of the timeslips, then I’ll mention the “why”…<\/p>\n

12.16 @ 114.5, 1.807 60-foot time
\n12.19 @ 114.3, 1.857 60-foot time
\n12.19 @ 114, 1.763 60-foot time (hit rev limiter bad on 1-2 shift)
\n12.32 @ 113.5, 1.897 60-foot time
\n12.32 @ 113.2, 1.922 60-foot time
\n12.34 @ 114, 1.895 60-foot time
\n12.40 @ 114.4, 1.972 60-foot time
\nOther 60 foot times included: 2.071, 1.971, 2.036, 2.254.<\/p>\n

The day started off exciting… We knew on the first run that the engine was
\n11-second capable. Had the MPH, just needed a good launch… If I coulda
\nhad a 1.71 60 foot time on that 12.19\/1.857 run, the 12.32\/1.922 run,
\netc… Coulda grabbed an 11.9x. We all knew it and as the day went on I
\nwas really really frustrated at not being able to improve the launch.<\/p>\n

\"\"<\/a><\/p>\n

Here’s what was happening in-car:
\nI’d take the engine to various rpm, usually no less than 4500, and then
\nwhen it was time to launch I’d start stepping on the gas and then start
\nreleasing the clutch. No matter how fast or slow I seemed to release the
\nclutch pedal, within the first few feet of launching, suddenly I’d hear
\nloud bangin’ noises coming from all 4 tires. The car ran *perfectly*
\nstraight off the line and down the track, was not squirmy in any way. So
\nwhat did I figure? I thought I had wheel hop… That the tires were right
\non the border of hooking up\/not hooking up and were going back and forth
\nbetween the two, hence the physical banging I was feeling\/hearing. (Every
\nlaunch now activated my windshield washers, too, so it seemed like I was
\ngetting decent traction).<\/p>\n

So stupid me, I spent almost all my runs trying to get the wheels spinning
\na little more… I raised the RPM level of my launches, tried slipping the
\nclutch even more (it doesn’t like to slip at all), etc. I didn’t want to
\nbe on the edge of traction… I wanted to have my wheels spinning more
\ncleanly for a little off the line, and then have them hook up solid… This
\nis how I got my low 1.7’s before, because the car still accelerates strong
\nwith the spinning, and you don’t bog your engine. Most of the runs
\nSaturday I’d hit the rev limiter on the 1-2 shift too… Suddenly it would
\njump to 7200 on my tach (my tach reads 300 rpm low) and there would be no
\ntime to shift to 2nd before the limiter hit…<\/p>\n

Realization of what was happening didn’t come until the 9th friggin run…
\n(I was kinda out of it the whole day from getting 3 hours max of sleep). I
\ncan’t remember exactly how it happened but I mentioned to someone how I hit
\nmy rev limiter at the 1-2 shift at my last run, and they responded “yeah,
\nyou were in that rev limiter for a while”… (And I was thinking “that’s
\nodd, when rev limiter hits before I can shift, it’s usually pretty quick).
\nThe spectator describes how my engine sounds *off the line* before I even
\ngot to shift… Brah-brah-brah-brah (stutter stutter stutter). Ronnie comes
\nby & he confirms the prob… I was riding the rev-limiter throughout the
\nlaunch! It was impossible to hear the rev-limiter with helmet on, windows
\nclosed, and big loud sounds coming from all 4 tires… Yeah, you could call
\nit wheel hop, but not because I was on the verge of traction… It was
\nbecause the engine was making so much power it was just annihilating all 4
\ntires and instantly going to rev limiter the whole way through 1st… As the
\nrev limiter hit, the wheels would go back & forth between gaining a touch
\nof traction & losing it again. The wheels were all spinning so evenly that
\nthe car never felt squirmy in any way and simply stayed straight…<\/p>\n

So yeah, I was running low 12’s with riding the rev limiter throughout
\nfirst gear. Engine made lots of power, clutch grabbed hard, tires couldn’t
\nhack it in any way. Plain & simple. Nice to know the why, but there
\nwasn’t anything I could do to go faster… Just couldn’t get any traction
\nwith such a harsh clutch. The clutch did its job of holding the power. It
\njust did it too well! End of story.<\/p>\n

I am gonna see about getting my rev limiter raised to 8000, perhaps that
\nwill help a little… Now I know how a FWD’er with a built engine and no
\nslicks feels. I honestly think though that if I had my “old” clutch in the
\ncar (before it blew a spring), 11’s coulda been mine :). Time to invest in
\nsome tires.<\/p>\n

Which leads us to today (Sunday)-<\/p>\n

Billy- Kick some butt and bring us that 11-sec time slip we’ve been waiting
\nfor… Our cars are definitely good for it. As long as you didn’t get my
\ntype of clutch installed last night you will do just fine :)-. Good luck
\nto Josh too!<\/p>\n

\n\t\t\t\t\tTweet<\/a>\n\t\t\t\t<\/div><\/div>
\r\n\t\t\t\t\t\t\t<\/a>\r\n\t\t\t\t\t\t<\/div><\/div>
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<\/div><\/div>","protected":false},"excerpt":{"rendered":"

The good: – The Pomona guys said it was the smallest turnout all year. We averaged a run per hour for the first few hours, and then around 2:40pm it started to become “run as often as you want”… You just ran & got back in line again (with between 16 – 40 other cars!) […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[16,33,30,15],"_links":{"self":[{"href":"http:\/\/roadraceengineering.com\/blog\/wp-json\/wp\/v2\/posts\/731"}],"collection":[{"href":"http:\/\/roadraceengineering.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/roadraceengineering.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/roadraceengineering.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/roadraceengineering.com\/blog\/wp-json\/wp\/v2\/comments?post=731"}],"version-history":[{"count":3,"href":"http:\/\/roadraceengineering.com\/blog\/wp-json\/wp\/v2\/posts\/731\/revisions"}],"predecessor-version":[{"id":736,"href":"http:\/\/roadraceengineering.com\/blog\/wp-json\/wp\/v2\/posts\/731\/revisions\/736"}],"wp:attachment":[{"href":"http:\/\/roadraceengineering.com\/blog\/wp-json\/wp\/v2\/media?parent=731"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/roadraceengineering.com\/blog\/wp-json\/wp\/v2\/categories?post=731"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/roadraceengineering.com\/blog\/wp-json\/wp\/v2\/tags?post=731"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}