 914 V8 drag race video, threw waterpump belt during 1st pass |
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| elocke |
 Sep 22 2005, 08:18 PM
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#1
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Member  Group: Members Posts: 178 Joined: 9-February 03 From: Georgetown, MA Member No.: 272  |
Thanks to Mark Skala and his setup I'm able to post this link.
http://www.rcd-video.com/images/drag-low.mpg Also he helped me get my car back after spending the night in the NE Dragway parking lot with a missing water pump belt. It either flew off or broke sometime during the run. The right meter under the knee pad indicates 180 (straight up) during the run, but early on the way back I noticed temp gauge pegged and freaked. By the time I pulled over it started to steam. 260 on the mechanical gauge on the manifold! It blew the overflow hose off the filler neck after cutting a slice in the plastic expansion tank cap. I thought for sure I'd cracked a head. Luckily it seems to run fine, but I need to talk to the builder about lurking damage. Below it my time slip. Bad reaction time and a tranny-saving start on 185's helped only my tranny, unlike an earlier Mustang that delayed things 25 min to clean his off the track. For some background on the car I think it's in my project post, which I haven't updated in some time but the basics are there. I've been so busy driving it! Ed Attached image(s) 
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| Aaron Cox |
Sep 22 2005, 08:32 PM
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#2
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
fun!
looked like a nice easy start for 2nd gear.... BTW - stock gears? |
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| elocke |
Sep 22 2005, 08:40 PM
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#3
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Member Group: Members Posts: 178 Joined: 9-February 03 From: Georgetown, MA Member No.: 272 |
Yes, stock gears. Renegade heavy axels/CV's. Wish I had a 930 box so I wouldn't have to worry, but I need to preserve mine at least until I try autocross.
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| Hammy |
Sep 22 2005, 08:54 PM
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#4
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mr. Wonderful Group: Members Posts: 1,826 Joined: 20-October 04 From: Columbia, California Member No.: 2,978 Region Association: Northern California |
the 901 just isn't the best on acceleration, is it?
Still (IMG:http://www.914world.com/bbs2/html/emoticons/blink.gif) How did you not piss yourself.. |
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| Aaron Cox |
Sep 22 2005, 08:56 PM
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#5
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
its fast if you can spin it to 7 or 8k... throw some tall gears in that bad boy..... |
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| tesserra |
Sep 22 2005, 09:28 PM
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#6
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Member Group: Members Posts: 210 Joined: 26-March 03 From: Lafayette CA Member No.: 479 |
I threw off my water pump belt at my first auto x. Turns out it was not well aligned and continued to have problems until I really got on the alignment issue.
As with you I worried about lurking internal problems the car seemed fine until it blew a head gasket and hydrolocked the motor. IT WAS UGLY, and expensive. On a more positive note, I don't think any 914 can see the speedometer climb that fast at such high speeds unless it has a V8. I love to watch speedometer when I downshift to 3rd (4th on normal trans) and floor it. Good luck and really check carefully the alignment, mine came from Renegade and it was off. George |
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| 914GT |
Sep 22 2005, 10:11 PM
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#7
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Senior Member Group: Members Posts: 1,100 Joined: 11-October 04 From: Tucson Member No.: 2,923 Region Association: Southwest Region |
Ed, that's a cool video clip. I could almost feel the rush like I get driving mine around. I was watching your tach in the video and how it bounces around. Take a look at this tach video of what I'm doing to my car.
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| J P Stein |
Sep 22 2005, 10:23 PM
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#8
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Irrelevant old fart Group: Members Posts: 8,797 Joined: 30-December 02 From: Vancouver, WA Member No.: 45 Region Association: None |
So, how do you dampen it?
I have a similar problem. |
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| Rand |
Sep 22 2005, 10:32 PM
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#9
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Cross Member Group: Members Posts: 7,409 Joined: 8-February 05 From: OR Member No.: 3,573 Region Association: None |
Guy!!!!!!!!!!! Stop teasing us!!!
Very nice. Ok, now, do tell.... how do we get that ultra-responsive tach? (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif) (IMG:http://www.914world.com/bbs2/html/emoticons/smilie_pokal.gif) |
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| 914GT |
Sep 22 2005, 10:59 PM
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#10
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Senior Member Group: Members Posts: 1,100 Joined: 11-October 04 From: Tucson Member No.: 2,923 Region Association: Southwest Region |
I don't mean to hijack Ed's thread here. However I am interested in how much he watches the tach when drag racing. I don't find the modified stock 914 tach all that useful but I do glance at it on occasion. When drag racing there are other things to be watching so is an accurate tach of much value?
About a year ago I spent a lot of time screwing around with different circuits for the 914 tach. I had something that worked much better than the original circuit but it was a pain to make linear, and the old movement has a lot of mass and there's only so much you can do with it. So I found an aftermarket tach and figured out how to transfer its innards into the old case, then recalibrate it for the stock bezel. I'm going to put it in my car tomorrow to test it out. Maybe I can post a new thread later on the results. |
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| Hammy |
Sep 22 2005, 11:23 PM
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#11
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mr. Wonderful Group: Members Posts: 1,826 Joined: 20-October 04 From: Columbia, California Member No.: 2,978 Region Association: Northern California |
Guy, please do (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif)
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| Mueller |
Sep 22 2005, 11:41 PM
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#12
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914 Freak! Group: Members Posts: 17,146 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None 
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simple, install a fast rev'ing V8 engine with plenty of torque (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif) seems pretty simple to me, hahahaha knowing the rpms while doing the 1/4 is very important to ensure you shift at the optimal point...the serious guys install a tach with a bright light that'll flash at a pre-determined rpm...of course I'm just guessing that he was overly watchful to make sure he didn't over-rev and blow something up (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif) |
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| rick 918-S |
Sep 23 2005, 04:39 AM
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#13
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Hey nice rack! -Celette Group: Members Posts: 20,460 Joined: 30-December 02 From: Now in Superior WI Member No.: 43 Region Association: Northstar Region 
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Stupid dial up! (IMG:http://www.914world.com/bbs2/html/emoticons/mad.gif) Can't wait to get home! (IMG:http://www.914world.com/bbs2/html/emoticons/driving.gif)
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| John2kx |
Sep 23 2005, 05:23 AM
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#14
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Senior Member Group: Members Posts: 502 Joined: 22-August 03 From: Augusta, Ga. Member No.: 1,066 |
Ed,
Nice video! North Hollywood converted my stock tach.........no bouncing needle. John |
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| dan10101 |
Sep 23 2005, 07:28 AM
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#15
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TORQUE-o-holic Group: Members Posts: 1,140 Joined: 29-April 03 From: Eagle Point, Or Member No.: 626 Region Association: Pacific Northwest |
What kind of v8 do you have in it?
I think I'll G tech my car when I get it tuned. (though I dont like taking it over 100 very often) I must say you shift well... My car clunks into gears... lol Andrew |
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| Root_Werks |
Sep 23 2005, 09:07 AM
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#16
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Village Idiot Group: Members Posts: 8,321 Joined: 25-May 04 From: About 5NM from Canada Member No.: 2,105 Region Association: Pacific Northwest
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That was a cool video! Thanks for sharing that! (IMG:http://www.914world.com/bbs2/html/emoticons/driving.gif)
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| bd1308 |
Sep 23 2005, 09:14 AM
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#17
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Sir Post-a-lot Group: Members Posts: 8,020 Joined: 24-January 05 From: Louisville,KY Member No.: 3,501 |
sure gives me a new adoration for the V8 though....sounds pretty (IMG:http://www.914world.com/bbs2/html/emoticons/drooley.gif)
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| bondo |
Sep 23 2005, 09:18 AM
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#18
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Practicing my perpendicular parking Group: Members Posts: 4,277 Joined: 19-April 03 From: Los Osos, CA Member No.: 587 Region Association: Central California |
Can you really over-rev a V8? In my experience (stock V8s without race cams and such) The power drops off enough before the redline that it'd feel unnatural to run it all the way up there. A missed shift could still do it I guess. |
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| TeeBee |
Sep 23 2005, 09:23 AM
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#19
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Newbie Group: Members Posts: 1 Joined: 23-September 05 From: Western MA Member No.: 4,849 |
Dat's me big brudda's car! Go, Ed!
Now as soon as I put an LS1 into my Miata, we're going head-to-head! teebee |
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| Mueller |
Sep 23 2005, 09:36 AM
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#20
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914 Freak! Group: Members Posts: 17,146 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None
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you can over-rev a lawn mower engine (BTDT, got the broken crank to prove it, hahahaha) there are 2 types of over-revving the motor: 1) the most obvious of taking the motor past it's redline which could cause damage 2) the more important one for drag racing, keeping the motor in it's optimal rpm range...if you know that when you shift there is a 500rpm difference in your gear ratios, you don't want to shift too early or too late..if the motor can safely rev to 8000, yet the torque falls flat at 7000, then you get no benifit taking it to 8K, you are better off shifting early |
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