[TPR] Asa back at home
John Bentley
gndplne at yahoo.com
Wed Sep 18 08:46:59 PDT 2013
if you think you have an engine balance problem (very unlikely) you should verify that at 5,000 rpm in first gear. If there is a resonance at the same rpm in every gear, its possible you have a problem. Typically if an engine gets out of balance, it won't last long. The crank twisting forces are huge.
JB|
________________________________
From: Asa Jay Laughton <asajay at asajay.com>
To: tpr at teampanteraracing.com
Sent: Wednesday, September 18, 2013 6:40 AM
Subject: Re: [TPR] Asa back at home
Not a bad idea, except this damper was rebuilt by Damper Dudes recently and is no longer stock. The bolt is a good point; I'll check that when I take the firewall cover off to do other work.
Asa Jay
Asa Jay Laughton, MSgt, USAFR, Retired
& Shelley Marie
Spokane, WA
****************************** http://www.racingagainstautism.com http://www.teampanteraracing.com http://facebook.com/racingagainstautism
On 9/18/2013 6:20 AM, Jim Wallace wrote:
Asa,
>
>Don't forget about the harmonic balancer, it may have shifted or the mail bolt holding it on my have come loose.
>
>Jim
>
>
>From: Asa Jay Laughton <asajay at asajay.com>
>To: tpr at teampanteraracing.com
>Sent: Tuesday, September 17, 2013 7:04 PM
>Subject: [TPR] Asa back at home
>
>
>I dropped Bullet off at home about 12:45 and then I came
home. Here is
>my wrap-up of the Pantera on course this year.
>
>Somewhere past 90 MPH the Pantera had a bad vibration. It
was low
>pitched and I could feel it in the seat of my pants. It
was bad enough
>at the start I nearly pulled off just three miles into the
course. I
>pressed on for another couple of miles slowly bringing her
up to 120 and
>it didn't feel any worse, so we prayed and kept going.
>
>I pushed up to about 130 in the trap and it felt about the
same. At
>some speeds it seemed to smooth out a little but it did
get worrisome.
>What is it? I don't know, but my gut feel is that it's an
imbalance in
>the engine, either due to something being out of balance,
or something
>like compression being off on one cylinder, or a bad plug,
plug wire,
>cap, rotor or maybe a lifter not working as well as it
should.
>
>Best case is wheels/tires out of balance, or a half-shaft
out of
>balance. I'll start there as those are easy to do and
probably need to
>be done again anyway. I have a great shop in town who
works on the
>half-shafts, and I think they can do a high-speed balance
on the
>wheels/tires. I'll check into it in the coming weeks.
>
>Next, I'll start looking around for a used portable engine
analyzer. If
>I can find one, great. If not, well, I'll start hunting
around some of
>the performance shops for some dyno time and see what we
can find there.
>
>I would like to say overall the car ran fine, and for the
most part it
>didn't disappoint. But there -is- some kind of stumble,
even at low
>speeds, which leads me to believe something is wrong with
the engine.
>I've got all winter to figure it out.
>
>Be that as it may...
>Chalk up another successful trip from Spokane, WA to Ely,
NV. Add an
>average run of 119 MPH (5.5 seconds off time), with a trap
that should
>come close to 130 and I'd say I had a good run.
>
>Oh and one more thing:
>At 70-75 MPH on the Interstate, my temp gauge runs a
needle width or
>more below 230 with no overheating. I checked that last
year and it was
>fine. Oil pressure at that speed is near 75. That is
normal freeway
>running. However, on course at 120, the temp climbed to
the needle
>touching 230 and the oil pressure was just a needle or so
above 35.
>
>My guess is that I was running a higher temp in the engine
which was
>thinning the oil. I'm thinking the engine may have been
running lean,
>it's hard to tell without an 02 sensor or A/F gauge. One
thing for
>certain, if I want to run faster, I'll need to mod the
cooling system
>and most likely add an oil cooler.
>
>I took an oil sample immediately after the race and will
send it in for
>analysis. I'll let you know how it all comes back.
>
>Asa Jay
>
>Asa Jay Laughton, MSgt, USAFR, Retired
>& Shelley Marie
>Spokane, WA
>******************************
>http://www.racingagainstautism.com/
>http://www.teampanteraracing.com/
>http://facebook.com/racingagainstautism
>
>
>On 9/15/2013 4:12 PM, Teampantera wrote:
>> AJ and I both finished...my Bosch elec fuel pump for
Efi started going south right after
passing.canyon/narrows...its never been a problem in last
couple 2-3 years but....
>>
>> Soon as fuel pressure falls below 43 pounds the efi
computer shuts down engineso engine doeant grenade...yea
good thing....but..
>>
>> when I lost fuel pressure (luckly Mike Trusty
recommended I get a fuel pressure gauge) the engine SHUT
DOWN.....I was aberaging 145+ at Narrows....so every time
fuel pressure fell below 43 engine shut down completly...
>>
>> I'd throw it in neutral and about 5-10 seconds later
the fuel pressure would go back up and engine would fire
up again...I did that like a DOZEN times but it worked
and I finished.....I think I was far enough ahead of my
goal speed that I only lost about a total of 5 mph or a
135 average. In the last 20 miles. I was just so happy to
FINISH so no complaints what so ever.
>>
>> AJ said his run went okay.....but he had a
unidentifed high.speed vibration above +/- 120 or.130...he
can clear that up
>> Later when he gives his summary report but he thought
it might have been his tire guy didnt get high speed
balancing right....and yea it could be a dozen other
things too and we wont.know until he gets home amd can
tell us.
>>
>> AJ and the Major drove back to Ely for awards banquet
there tonight and then they are headed back to
Washington....and Peter, Mark and I are back in Vegas.
Will find out tonight how we really did but happy we
finished!!
>>
>> Mark and AJ got.lots of photos so they will follow
for sure.
>>
>> David in Durango <adin at frontier.net> wrote:
>>
>>> Standing out on the high desert waiting for a
green light?
>>>
>>> Sounds like good odds. You certainly have some
good support - we should see
>>> a trophy or two?
>>>
>>> Seems the Pantera would qualify as a vintage car
- mine is 40 years old (and
>>> getting better every day!)
>>>
>>> No matter what - BE SAFE!
>>>
>>> All the dogs on the porch want to see pictures!
Good luck w/ the rail
>>> project - I want a tour!
>>>
>>> Peace out.
>>>
>>>
>>> ----- Original Message -----
>>> From: "Teampantera" <teampantera at yahoo.com>
>>> To: <tpr at teampanteraracing.com>
>>> Sent: Saturday, September 14, 2013 11:35 PM
>>> Subject: [TPR] The Competition
>>>
>>>
>>>> In AJ' 120 division class (his goal is to
nail 120 and can go a sfast as
>>>> 140) there are only 7 entries...compare that
to 24 entries in the 110
>>>> class. His competition includes many
veterans...there is a awsome 1969 AMX
>>>> and a race prepared Caddy CTS-V. The rest are
one vette, 1 mustang, 1 87
>>>> Firebird, and race prepared ASA truck
>>>>
>>>> In my 140 (165 Tech) group they are all
veterans and include two Porsches
>>>> (911t & 89 928S), one 600HP Shelby GT500,
a Mustang Cobra, a Z06, one
>>>> camaro, and two other C6 Vettes but not one
vintage car.
>>>>
>>>> And only 7 vintage pre-74 entries out of 127
total entries...we should all
>>>> be proud of having two non race car panteras
here this weekend.
>>>>
>>>> I EXPECT to finish tomorrow. And I EXPECT Asa
will WIN something...his
>>>> Pantera looks so good and sounds even better.
>>>>
>>>> Hanging out in JB's "Cafe Finito" all weekend
was awsome too. He fed us,
>>>> had cold brewskys and some stuff called Bud
Light ;-))))
>>>>
>>>> To have our buddies here helping us was so
big I can NOT even begin to
>>>> describe how good it made me feel.
>>>>
>>>> So big thank you to Peter, John, Mark, and
AJ's dad who is a
>>>> firecracker....I dont even believe the Major
fathered Asa....what I think
>>>> happened was Bullet just adopted Asa or found
him under a rock
>>>> somewhere.... ;-)))))
>>>>
>>>> But the Major who I will write much more
about next week is a USAF legend
>>>> flying among other jets a F-111 and of course
the B52 (BUFF)...There is no
>>>> combat veteran that ever called in and
actually got and then saw and
>>>> heard a B52 arclight bomb run who could not
be impressed.
>>>>
>>>> Okay guys...hitting the sack and next week
starting the new high speed
>>>> (bullet) rail project in Central Valley
(Fresno)...20 miles from Sequoia
>>>> and Kings Canyon Nat Parks...so super
excited..first one in the nation.
>>>>
>>>> Old Dawg
>>>>
_______________________________________________
>>>> TPR mailing list
>>>> TPR at teampanteraracing.com
>>>> http://teampanteraracing.com/mailman/listinfo/tpr_teampanteraracing.com
>>>>
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>
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