 Suicidal...I missed a shift, Broke my motor..... |
|
|
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
|
  |
| nine14cats |
  Jul 5 2004, 03:01 PM
Post
#1
|
|
Bill Pickering -- 914-6 GT aka....Leeloo  Group: Members Posts: 2,618 Joined: 10-February 03 From: Campbell, CA Member No.: 287 Region Association: None  |
I was at Buttonwillow this weekend at the Time Trial....running fast a strong and running personal best lap times....the car was hooked up and I was having a great time.
Coming onto the main straight I missed the 3rd to 4th upshift and spun my motor well over 8K rpm....by the time a came around to pit the car was puffing smoke and when I got back to the trailer I took the cap off of the 914-6 oil tank and it was billowing whitish/blue smoke like a friggin choo-choo train. Boiled 2.7 litre anyone? (IMG:style_emoticons/default/wink.gif) Before I shut here down it wouldn't rev past 4K...could be rings, a piston, valves, mains... And I did it to myself. I really look forward to track days. My job has me traveling a ton right now...In fact I go back to Asia on Friday July 9th. Between family, my job and just trying to find time to pull the motor...it looks like I'm done for the season and actually for several months. I'm majorly bummed. 914 life sucks at the moment (IMG:style_emoticons/default/huh.gif) At least I have my health... (IMG:style_emoticons/default/beerchug.gif) Sorry to whine...I had to vent...I'm actually really upset. It's hard to take sometimes...especially when it's my mistake that did this. I've never rebuilt a 6 cylinder myself before. But I'm going to do this one...too much money I need to invest in other parts of the car. Bill P. |
   |
 
|
| fiid |
Jul 5 2004, 03:07 PM
Post
#2
|
|
Turbo Megasquirted Subaru Member Group: Members Posts: 2,827 Joined: 7-April 03 From: San Francisco, CA Member No.: 530 Region Association: Northern California |
Bummer dude. I was looking forward to hanging out at the track when I get my 914 running again. I suppose we might actually get to running state around the same time anyways.
Good luck for the rebuild. Maybe you can find some more power when you've got the case apart :-) Fiid. |
|
|
|
| billswim |
Jul 5 2004, 03:09 PM
Post
#3
|
|
Member Group: Members Posts: 50 Joined: 9-June 04 From: Oakland, Ca Member No.: 2,183 |
Don't kill yoursefl right away. If you have the stock rocker arms they are designed as the weak point in the valve train to break before anything else. Pull the valve covers and inspect the rockers and springs before taking the whole thing apart. The rockers can be done without disassembling the motor. Sometimes the springs too but you need tools and patience but if I foung broken springs, I'd probably pull the heads.
Check for the broker rockers and then do a leakdown. All maynot be lost. |
|
|
|
| Trekkor |
Jul 5 2004, 03:20 PM
Post
#4
|
|
I do things... Group: Members Posts: 7,809 Joined: 2-December 03 From: Napa, Ca Member No.: 1,413 Region Association: Northern California |
Sorry to here about the mishap.
look foward to seeing you and Doris out running again soon. KT |
|
|
|
| Jake Raby |
Jul 5 2004, 03:33 PM
Post
#5
|
|
Engine Surgeon Group: Members Posts: 9,398 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
Oh man.... That sucks.. It sucks even more to admit it.
This is when having the six, really sucks- Open wallet and begin to cry! |
|
|
|
| J P Stein |
Jul 5 2004, 04:05 PM
Post
#6
|
|
Irrelevant old fart Group: Members Posts: 8,797 Joined: 30-December 02 From: Vancouver, WA Member No.: 45 Region Association: None |
Now that sux........ (IMG:style_emoticons/default/sad.gif)
Lotso blow by don't sound good. What kind of pistons do you have in there? By all means, fix it yourself. It ain't rocket science. |
|
|
|
| soloracer |
Jul 5 2004, 04:06 PM
Post
#7
|
|
Senior Member Group: Members Posts: 793 Joined: 7-April 03 From: Calgary Member No.: 538 |
That really sucks. Is there anything that could be done (besides shifting better) to prevent this from happening? Would a rev limiter help?
|
|
|
|
| J P Stein |
Jul 5 2004, 04:11 PM
Post
#8
|
|
Irrelevant old fart Group: Members Posts: 8,797 Joined: 30-December 02 From: Vancouver, WA Member No.: 45 Region Association: None |
Nuthin' helps except a quick left foot......and a lot of luck.
Racing valve springs will often do the trick. |
|
|
|
| bernbomb914 |
Jul 5 2004, 04:12 PM
Post
#9
|
|
one of the oldest Farts on this board Group: Benefactors Posts: 1,873 Joined: 29-December 02 From: Temecula, CA Member No.: 36  |
There is a 2.7s with a fresh rebuild on ebay check it out under 911 engine
Bernie |
|
|
|
| Demick |
Jul 5 2004, 04:24 PM
Post
#10
|
|
Ernie made me do it! Group: Benefactors Posts: 2,312 Joined: 6-February 03 From: Pleasanton, CA Member No.: 257 |
Hi Bill. Sorry to hear about your motor. Looks like you and me both will be sitting on the sidelines rebuilding our motors for the next few months. If I can get the time and the motovation mine comes out next weekend.
Demick |
|
|
|
| Joseph Mills |
Jul 5 2004, 04:29 PM
Post
#11
|
|
on a Sonoma diet now... Group: Members Posts: 1,482 Joined: 29-December 02 From: Oklahoma City, OK Member No.: 39 |
QUOTE(nine14cats @ Jul 5 2004, 03:01 PM) ...it looks like I'm done for the season and actually for several months. I've never rebuilt a 6 cylinder myself before. But I'm going to do this one...too much money I need to invest in other parts of the car. Bill P. Sorry to hear the bad news Bill. Hopefuly the damage will not be too bad. I'm kinda in the same boat right now so I have some idea how frustrating it is. Help from this board and from local friends has really helped to keep me optimistic. Keep us tuned in. Oh, and here's to your health! (IMG:style_emoticons/default/beer.gif) |
|
|
|
| nine14cats |
Jul 5 2004, 04:47 PM
Post
#12
|
|
Bill Pickering -- 914-6 GT aka....Leeloo Group: Members Posts: 2,618 Joined: 10-February 03 From: Campbell, CA Member No.: 287 Region Association: None |
Thanks for the words of encouragement folks....I appreciate it.
I have an MSD 6AL with the rev limit set at 7200 RPM. Somehow it wasn't smart enough to keep me from selecting the wrong gear...must be a design flaw... (IMG:style_emoticons/default/laugh.gif) On one hand...my winter project starts 5 months early....on the other hand...I know of a certain 3.6 litre 993 waiting to be had and a 915 box...would just need a WEVO kit...and hey....300+ reliable HP! Of course...a missed shift will still end in the same mess only with bigger engine parts... As an aside from the weekend...Doris and I were really feeling the engine have heat soak problems in the afternoons at the track. 2 drivers with the ambient temp at 95 degrees and track at +110 degrees really strains air cooled motors. Ours seemed to be running fine as we have a big oil cooler on it, but it still was tough on the car. I'll have a few weeks to think of my options and decide what to do next on the car... It'll suck sitting on the sidelines for awhile. Bill P. |
|
|
|
| VegasRacer |
Jul 5 2004, 04:51 PM
Post
#13
|
|
ELVIRA Group: Benefactors Posts: 8,709 Joined: 27-March 03 From: Between Scylla and Charybdis Member No.: 481 Region Association: None
 |
I feel your pain. (IMG:style_emoticons/default/headbang.gif) I did the exact same thing at Willow Springs 2 years ago. Heading on to the straight - aiming for 4th gear and found 2nd. I only let the clutch out half way before I caught it, but by then it was to late. I turned the valves into pretzles plus assorted other damage. (IMG:style_emoticons/default/mad.gif) (IMG:style_emoticons/default/smash.gif)
|
|
|
|
| nine14cats |
Jul 5 2004, 04:53 PM
Post
#14
|
|
Bill Pickering -- 914-6 GT aka....Leeloo Group: Members Posts: 2,618 Joined: 10-February 03 From: Campbell, CA Member No.: 287 Region Association: None |
Hi JP,
I'm running JE Pistons at 10.5:1 compression in the car. Have some headwork to help it breath...and I also had the heads chamfered while I was in there last time to keep from having the pistons touch the heads if I were to ever over rev the motor... (IMG:style_emoticons/default/rolleyes.gif) When I get here apart in a few weeks I'll post pics of the carnage... Bill P. P.S. How long did it take you to disassemble and reassemble your 2.7? |
|
|
|
| seanery |
Jul 5 2004, 04:56 PM
Post
#15
|
|
waiting to rebuild whitey! Group: Retired Admin Posts: 15,854 Joined: 7-January 03 From: Indy Member No.: 100 Region Association: None |
Dude, same thing happened to me in april. Luckily it was in the -4, not my brand spankin' new 2.7 RS motor. I hope yours is an easy fix. (IMG:style_emoticons/default/smash.gif)
|
|
|
|
| J P Stein |
Jul 5 2004, 05:41 PM
Post
#16
|
|
Irrelevant old fart Group: Members Posts: 8,797 Joined: 30-December 02 From: Vancouver, WA Member No.: 45 Region Association: None |
QUOTE(nine14cats @ Jul 5 2004, 02:53 PM) P.S. How long did it take you to disassemble and reassemble your 2.7? About 6 months (IMG:style_emoticons/default/biggrin.gif) I was proceeding at a leisurely pace as I was planning the combo and shopping for a few oddball parts. Bottom end machine work took 2 weeks. Heads about 3 weeks.....I shipped them to EBS....so I assembled it in stages. If everything was in front of me, I figure bout 3-4 weeks of spare time. That evil bay motor may be a good deal, but I wonder about the wisdom of twin plugging an 8.5 : 1 motor. My total cost was under $6K for the long block.....I did gud shopping (IMG:style_emoticons/default/biggrin.gif) ....I did pay full boat for 9.7:1 pistons. If you didn't hurt your cylinders or bottom end, you can beat that. Big blow by is prolly piston probs....but I've been wrong before. I've got the tools you need. Lemmeno and I can loan em to you.....you wouldn't be the first (IMG:style_emoticons/default/biggrin.gif) BTW, Jake, how much for one of your 230-250 hp road race T-4 motors? |
|
|
|
| ArtechnikA |
Jul 5 2004, 06:10 PM
Post
#17
|
|
rich herzog Group: Members Posts: 7,390 Joined: 4-April 03 From: Salted Roads, PA Member No.: 513 Region Association: None |
sucks, sorry about that.
if you haven't already, buy Anderson's 911 Performance Handbook and Pelican Wayne's Rebuild Book; they'll give you an idea of the scope. i understand with your travel schedule it'll be hard but if you can swing the time i do recommend the Bruce Anderson/Jerry Woods 911 engine rebuild class. made me aware of several issues i'd have discovered too late on my own. i agree with JP - with GOOD manuals and access to knowledgeable machine shop services (and a few special tools) you can put it back... |
|
|
|
| Jeroen |
Jul 5 2004, 06:10 PM
Post
#18
|
|
914 Guru Group: Members Posts: 7,887 Joined: 24-December 02 From: The Netherlands Member No.: 3 Region Association: Europe |
Bill, that sucks!
Let us know whats wrong once you find out... cheers, Jeroen |
|
|
|
| soloracer |
Jul 5 2004, 07:09 PM
Post
#19
|
|
Senior Member Group: Members Posts: 793 Joined: 7-April 03 From: Calgary Member No.: 538 |
So if I miss a shift with my rotary engined 914 I could take out the valves? (IMG:style_emoticons/default/wink.gif)
|
|
|
|
| J P Stein |
Jul 5 2004, 07:21 PM
Post
#20
|
|
Irrelevant old fart Group: Members Posts: 8,797 Joined: 30-December 02 From: Vancouver, WA Member No.: 45 Region Association: None |
Hay, if ya ever get it runnin', give it a try and report back (IMG:style_emoticons/default/laugh.gif)
Rotor seals are bullet proof, eh? |
|
|
|
|
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 26th December 2024 - 02:57 PM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.