Author Topic: valve springs  (Read 18563 times)

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Offline Be4u

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Re: valve springs
« Reply #15 on: July 20 2016, 05:53:02 PM »
Using about four swivels makes it cake.
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Offline Shimy87

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Re: valve springs
« Reply #16 on: July 21 2016, 08:56:50 PM »
Well as my luck always goes, fire it up and it barely stumbles and my knock alarm is screaming.... quickly shut it off and get out. re-check plug wires to make sure they are right....they are. To frickin hot to piss around with it tonight...with my luck it dropped a valve somehow...I double checked every one to make sure I had the lock things in good.  Going to get up about 3 in the morning when its cool and tear the valve covers back off and see what shit storm is waiting :(  Should have just left well enough alone :rolleyes;
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 Steve Wood

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Re: valve springs
« Reply #17 on: July 21 2016, 09:59:08 PM »
does not sound likely but have a look
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Offline Shimy87

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Re: valve springs
« Reply #18 on: July 21 2016, 11:03:53 PM »
if all valve springs are in order what else would cause this? I know, probably a million things but what would be the most likely things to check first?
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 Shimy87

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Re: valve springs
« Reply #19 on: July 22 2016, 08:32:43 AM »
pulled valve cover on pass side, I had the last/back push rod not seated in lifter so the valve was constantly open. I pulled out push rod and it had a very small bend. I straightened it out and reinstalled it. Started motor and it ran but it dosent idle smoothly, motor rocks, when I added some throttle it smoothed out but you could tell it has a slight miss. Do I need to replace that push rod? Went to re-start and it made a bad noise on first crank so I didn't start it. After work I'm going to pull both valve covers and plug wires and have wife crank it over so I can watch all valves to see if they are all moving correctly. Could just a slight bend in that one push rod be causing this wobbly idle and slight miss? If so can I just replace that one or do I need to do them all. Of could this have hurt something else?

Thanks for any help!!
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 Shimy87

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Re: valve springs
« Reply #20 on: July 22 2016, 09:16:24 AM »
pulled covers and had wife spin it over, all valves seem to be operating properly. The push rod that got bend I got 99% straight, could that still be the issue?
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 larrym

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valve springs
« Reply #21 on: July 22 2016, 09:23:43 AM »
Yes
86 white T type with t tops and blackout trim. 60lb injectors Gen 2 with Extender Chip TR6 ignition 212/206 roller cam Turbonetics BB CPT 61 CAS V4 Intercooler Cobbled together Alky Injection 4 inch MAF pipe with integral sensor
2800 stall lots of fun with a little 6 banger!
Best ET 11.36

Offline Shimy87

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Re: valve springs
« Reply #22 on: July 22 2016, 09:40:44 AM »
Replace all or just that one
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 Steve Wood

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Re: valve springs
« Reply #23 on: July 22 2016, 09:43:53 AM »
Sounds like the valve that was held open hit the piston and bent the face of the valve so the valve no longer seals and that cylinder will now fire weakly causing a miss.

If a pushrod  will not roll across a piece of plate glass, or any flat surface, without a sign of a wobble, it is too bent to be re-used.  I have never seen a bent push rod straightened enough to work properly for very long.

Now, one has to hope the pushrod bent before the base of the lifter and the cam lobe were damaged by the impacts of a lifter that was no longer hydraulic when the pushrod was sitting on the lifter edge.

You are going to have to pull the intake, remove the head, and get the valve replaced, and a valve job at the minimum; I think.
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Offline Shimy87

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Re: valve springs
« Reply #24 on: July 22 2016, 11:10:39 AM »
That's awesome, so glad I decided to change these springs  :013:  When I get home I'll pull the rockers assembly and put some air to that cylinder to check for leaking but I'm sure your right and I bent that fricking valve. Stupid SOB, so pissed at myself!!!! What's the best head gasket to get? Of course its the passenger side so everything is so easy to get to. Did I mention how pissed I am at myself.

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 Steve Wood

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Re: valve springs
« Reply #25 on: July 22 2016, 12:02:41 PM »
I guess we did not tell you to double check such things....
Steve Wood

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Offline Shimy87

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Re: valve springs
« Reply #26 on: July 22 2016, 12:16:21 PM »
live and learn, I just always learn the hard way  :icon_confused:

Is a Victor Reinz 3797 a good head gasket to get?
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 Steve Wood

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Re: valve springs
« Reply #27 on: July 22 2016, 02:03:29 PM »
That is the same as the factory hg and it would be my choice
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Offline Shimy87

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Re: valve springs
« Reply #28 on: July 22 2016, 02:11:18 PM »
Thanks Steve!!
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 gusszgs

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Re: valve springs
« Reply #29 on: July 22 2016, 03:11:48 PM »
Pretty sure that's what Rich used (Texas T) and had good luck with it.
Jim
1987 T Limited

 

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