Author Topic: Knock is back?!?!  (Read 13334 times)

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Offline Steve Wood

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Re: Knock is back?!?!
« Reply #30 on: April 18 2012, 03:53:44 PM »
Is this the guy that we asked you how many 200 4r trannies he had built for Regals in that 30 years?

http://www.vortexbuicks-etc.com/tvcable.htm


I would not expect to get anything for my money from the guy with the machine either unless he is a TB owner

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Offline SuperSix

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Re: Knock is back?!?!
« Reply #31 on: April 18 2012, 06:02:32 PM »
Is he blowing smoke? Very reputable place, 30+ years in business. I have always felt the miss thing he is saying is the cause? Could this be or is it not a possibility? again I dont know crap about transmissions! he also was adjusting some cable by the thottle body that did have an effect, he put it back to where it was but it must be off a bit because now it goes into over drive with a lurch.

I'm not a trans guy - but it sounds fishy to me.

You could learn - the basics aren't hard.

Not sure why he would fiddle with the TV cable.

You can adjust that yourself - it's very easy.
http://www.gnttype.org/techarea/transmission/tvcable.html
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Offline gbsean

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Re: Knock is back?!?!
« Reply #32 on: April 18 2012, 08:50:25 PM »
messing with the TV cable can fry a trans see above links....not quite sure how this fits into the knock issue...unless the trans is shifting so hard something is setting of the sensor

Offline Steve Wood

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Re: Knock is back?!?!
« Reply #33 on: April 18 2012, 09:00:34 PM »
his knock issue appears to have been a lack of boost control due to a problem with the wastegate solenoid....th ese threads have a lot of twists and turns
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Offline Shimy87

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Re: Knock is back?!?!
« Reply #34 on: April 18 2012, 09:22:43 PM »
The miss is noticeable when crushing, I don't think it's a fuel delivery issue as the O2's are never below 800 and if it was leaning out the knock would still be there??? I'm hoping it's an electrical issue that this guy can find and cure... Maybe a bad coil a possibility?
87 GN, K&N cold air, gutted cat, TT 5.7 chip, AFPR, 340 Walbro w/ hotwire, 60 LBS injectors, 981 valve springs, 206/206 Cam, RJC Powerplate, LS1 MAF & translator, Vacuum brakes, Hellwig rear sway bar, Energy suspension poly bushings, Razors Alky, Pypes exhaust, 5931 turbo, CK9.5 converter

Offline gbsean

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Re: Knock is back?!?!
« Reply #35 on: April 18 2012, 09:48:47 PM »
his knock issue appears to have been a lack of boost control due to a problem with the wastegate solenoid....th ese threads have a lot of twists and turns

you aint whistling dixie

Offline Steve Wood

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Re: Knock is back?!?!
« Reply #36 on: April 18 2012, 10:33:36 PM »
doubt it...  that would show up much worse under throttle

Didn't you put a set of new injectors in it? 
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Offline Steve Wood

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Re: Knock is back?!?!
« Reply #37 on: April 18 2012, 11:12:51 PM »
BTW, the tranny shift points are controlled by rpm and throttle valve pressure.   A miss at cruise, or such, has nothing to do with shifting...jus t trying to help you identify smoke :)
Steve Wood

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Offline Shimy87

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Re: Knock is back?!?!
« Reply #38 on: April 19 2012, 11:15:53 AM »
I didnt put injectors in, the previous owner said he had put in 42 LB ones. Could a partially plugged or bad injector be found by this mechanic or do they need to be removed and tested? Should I just get some 60 LB ones and be done with it? best place to get them?
 
It shifts completely normal in normal driving, I adjusted the TV cable per the directions on your site. A question though, for firmer shifts you would adjust the cable toward the front of the car a bit, to far toward the back would soften the shift but be bad for the tranny??
 
Ignoring the tranny thing. On the miss with the motor, is there anything in particular I should have the mechanic check that may not be looked into if he isnt that familar with the turbo regals?
87 GN, K&N cold air, gutted cat, TT 5.7 chip, AFPR, 340 Walbro w/ hotwire, 60 LBS injectors, 981 valve springs, 206/206 Cam, RJC Powerplate, LS1 MAF & translator, Vacuum brakes, Hellwig rear sway bar, Energy suspension poly bushings, Razors Alky, Pypes exhaust, 5931 turbo, CK9.5 converter

Offline SuperSix

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Re: Knock is back?!?!
« Reply #39 on: April 19 2012, 11:28:08 AM »
Do you have a scan tool? Scanmaster/PowerLogger/etc?
'87 GN, 60lb, TA49, THDP, FTP cam, T+ lots o' shit - SOLD
'07 Ford F150 Lariat 2WD, 5.4L 3v - 255k
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Offline Steve Wood

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Re: Knock is back?!?!
« Reply #40 on: April 19 2012, 12:03:11 PM »
If I recall correctly...pu shing the cable forward will firm up the shifts but also delay them.

pulling it toward the firewall will soften the shifts, make them shift a bit earlier, and if too far, will make the clutches slip during shifts and burn them up.  I like to set it so that the car normally gets into OD before the converter locks up.  If it locks before the shift, then you get a bang when it shifts.

Because the 200-4r has a different valve body in it as compared to trannies used in montes, etc, it has to be rebuilt differently and there are tricks in installing shift kits, etc.  This is why we harp on finding someone that knows these transmissions but most think we are dumb asses :)
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Offline Shimy87

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Re: Knock is back?!?!
« Reply #41 on: April 19 2012, 12:30:21 PM »
Have a scanmaster, have an "average " understanding of how to read it, check Steve's site alot also :atbeer: .
 
I know you guys know your stuff, believe me, and I did try to find the best place in a reasonable distance to do the tranny work. A local guy owns a world renowned restoration shop, named L'Cars, he restores million dollar cars, builds hot rods, long history. If interested he has a good website. Anyway, I went there and talked to Bob and he recomended this place, this guy does all his tranny work to. I'm confident he rebuilt it correctly.
 
Any direction on the injectors or motor diagnosis???
87 GN, K&N cold air, gutted cat, TT 5.7 chip, AFPR, 340 Walbro w/ hotwire, 60 LBS injectors, 981 valve springs, 206/206 Cam, RJC Powerplate, LS1 MAF & translator, Vacuum brakes, Hellwig rear sway bar, Energy suspension poly bushings, Razors Alky, Pypes exhaust, 5931 turbo, CK9.5 converter

Offline earlbrown

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Re: Knock is back?!?!
« Reply #42 on: April 19 2012, 09:43:03 PM »
Years ago I was troubleshootin g a "miss" during cruise...   turns out it was the TCC disengaging and reengaging rapidly.
Installing a manual lockup switch verified the problem (and gave me enough of a band-aid to put off fixing the actual problem)
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Offline ULYCYC

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Re: Knock is back?!?!
« Reply #43 on: April 20 2012, 08:43:48 AM »
Get the trans issues done first.  You said it had a miss while cruising?   Is that fixed yet?
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Offline Steve Wood

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Re: Knock is back?!?!
« Reply #44 on: April 20 2012, 11:49:07 AM »
Ed, Ed, Ed!  You have to keep up better!  The tranny guy said there was no tranny problems.  The failure to shift out of low gear at wide open throttle was due to a miss at cruise the best I can figure out :D

The tranny guy did something with the tv cable, however, and it has since been readjusted as per the normal means.

Oh yeah, for your score card, mark down that the detonation was caused by lack of boost control... 
Steve Wood

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A lot of broken parts does not make you a racer; it makes you a slow learner.

 

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