What are symptoms of #9 or #10 camshaft lobe wear?

Started by RICHTGP, December 20, 2008, 03:27:25 PM

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TGed

#45
You dont NEED them, all you would have to do is grind the existing plates with a dremel cylinder grinding bit ($2.33 at your local lowes or home depot) about 1/16" of an inch.

I have a few Gen 2 vehicles, and I did the 1.6 rocker swap on all of them (One has the roller tip style) .  The first one (roller tips) I just used the grinding wheel method, the other one I didn't even bother since the car is a Daily Beater that I literally BEAT the piss out of.  The last vehicle I did the grinding method again. 
No problems from any of the vehicles.

Roller tipped style are over rated.  I will NEVER buy those EVER again.  They are loud, require valve lash, and nearly impossible to install with LIM still on engine.
http://www.tgpforums.com/index.php/topic,5214.msg38936.html#new

-Don't go around saying the world owes you a living; the world owes you nothing; it was here first.-

-Assume nothing, question everything.-

flybynite

Quote from: TGP Nick on December 31, 2008, 07:53:52 PM
  I also have been turning wrenches for many years and currently in school to be a mc technician..
Like I said, I was just curious to how you found the valves floating.
Sorry I underestimated your skills Nick, But If you had worded your post a little bit different I would not have been so defensive with my reply
Quote from: TGP Nick on December 30, 2008, 08:33:13 PM
Seriously?  How can you prove this?  I'm not saying that I don't believe you, but it is kinda hard to believe this would happen on a stock application, especially at such low RPMs..
Just re read it and you will see what I mean... But regardless I'm sorry if I upset you Nick, That was not my intention..
   Back to the topic..
  I have seen valve float in countless datalogs of cars I have tuned, not just TGPs. On TGPs it usually occurs @ or around 4800rpm. It starts by the A/F ratio starting to jump around a bit and soon knock counts occur. For those of you wondering why your car seems to loose power in the upper rpms this could be your problem...
Here is a link to some bosch design III injectors
http://cgi.ebay.com/ebaymotors/LS1-Stock-GM-Fuel-injectors-NO-RESERVE_W0QQcmdZViewItemQQ_trkparmsZ72Q3a543Q7c66Q3a2Q7c65Q3a12Q7c39Q3a1Q7c240Q3a1318Q7c301Q3a0Q7c293Q3a1Q7c294Q3a50QQ_trksidZp3286Q2ec0Q2em14QQhashZitem130278094883QQitemZ130278094883QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessories
There are many auctions for these type injectors, these were the cheapest starting bid...
1989 TGP Pace Car
1990 TGP Red/Tan Leather

TGP Nick

Nick
1989 Pontiac Turbo Grand Prix- LG5 - 4T60HD
2008 Ford Ranger XLT- 2.3 DOHC I-4 - 5MT
2012 Nissan Altima SR coupe- 3.5 V6 - 6MT

RICHTGP

Definitely want those 1:6 rockers. Let me know how much and when I can get them!! ;)

TGed

http://www.tgpforums.com/index.php/topic,5214.msg38936.html#new

-Don't go around saying the world owes you a living; the world owes you nothing; it was here first.-

-Assume nothing, question everything.-

mfewtrail

Quote from: TGed on January 02, 2009, 12:01:37 AM
You dont NEED them, all you would have to do is grind the existing plates with a dremel cylinder grinding bit ($2.33 at your local lowes or home depot) about 1/16" of an inch.

I have a few Gen 2 vehicles, and I did the 1.6 rocker swap on all of them (One has the roller tip style) .  The first one (roller tips) I just used the grinding wheel method, the other one I didn't even bother since the car is a Daily Beater that I literally BEAT the piss out of.  The last vehicle I did the grinding method again. 
No problems from any of the vehicles.

Roller tipped style are over rated.  I will NEVER buy those EVER again.  They are loud, require valve lash, and nearly impossible to install with LIM still on engine.

I know they aren't needed, but it is much simpler to bolt on the 1.6 guideplates instead of doing any grinding. ;)
'93 SE, '90 Black/tan TGP, & '90 Red/tan TGP

cobracmdr

Here is my chance to be the nayser, I have never modified anything in the 3 cars I have put 1.6 ratio rockers in.  Just bolt them in and go.  I have not had ANY issues with this. 

1989 Turbo Grand Prix - missed very much!!!!
2010 Camaro 2SS/RS LS3 M6 12.01 @117 mph - Inferno Orange Metallic, long tubes, x pipe, Cat back, all 3" pipe 321 SS, vararam intake, LC-1, diy tune
01 Grand Prix GTP - 3.4 pulley, plog, k&n drop in, u-bend & resonator delete, tuned
03 Suzuki SV650N - zx10 shock, racetech springs/emulators, streetfighter

GOT2B GM

All I did when I put the 94-95 1.6 stamped rockers in, was swap the pushrod guides out for the newer style (deeper slots in the newer ones)

Rocker arm studs are the same.


Matt Shantz - 1990 Pontiac Turbo Grand Prix COLD A/C 80K mi, KAZ Hot Tuned, Birchtrax'ed +  a few mods  ......... 14.6829 @ 95.11 mph

mfewtrail

Quote from: cobracmdr on January 04, 2009, 09:11:33 AM
Here is my chance to be the nayser, I have never modified anything in the 3 cars I have put 1.6 ratio rockers in.  Just bolt them in and go.  I have not had ANY issues with this. 

Stock guide plates Ken? The stock ones in my car were rubbing pretty badly is why I swapped them out. I think I posted a picture in the stickied thread of where they were rubbing.
'93 SE, '90 Black/tan TGP, & '90 Red/tan TGP

GPChief

#54
This is what happens when you don't grind the down correctly.   These were with the crane 1:6 roller tip rockers........that was a big mistake getting those, had to readjust twice, then this happened driving from TX to CO.  I had initially adjusted the lash then took a piece of a Manila folder to see if there was clearance between the pushrod and guide. I'll be putting the stamped steel ones on the TSTE with the newer guide plates. :icon_cool:

2004 GTP -  3.8 Blown - Only modding for MPG.
1997 GTP  - 3.8 Blown - Too many mods to list.
1996 GTP - 3.4 DOHC - Twin to my 1997.
1995 SE - soon to be a 3.8 turbo car.
1990 TSTE x 2 white cloth
1990 TSTE x 1 maroon leather
1990 TGP - 5 speed.

GOT2B GM

The way I see it, if your pulling the stamped 1.6 rockers from a donor car anyways, the proper guideplates are right there. Takes 5 mins extra work to remove those as well. No grinding required.


Matt Shantz - 1990 Pontiac Turbo Grand Prix COLD A/C 80K mi, KAZ Hot Tuned, Birchtrax'ed +  a few mods  ......... 14.6829 @ 95.11 mph

TGed

Was that after grinding or no grinding at all? 
That is weird....  Even more weird IF it was grinded some.
http://www.tgpforums.com/index.php/topic,5214.msg38936.html#new

-Don't go around saying the world owes you a living; the world owes you nothing; it was here first.-

-Assume nothing, question everything.-

TGed

Quote from: GOT2B GM on January 04, 2009, 02:56:49 PM
The way I see it, if your pulling the stamped 1.6 rockers from a donor car anyways, the proper guideplates are right there. Takes 5 mins extra work to remove those as well. No grinding required.

Well either way you have to remove the guides to do it "right" anyway.  I just preferred modifying it my self since most engines that had the rockers was all sludged up and junk.
http://www.tgpforums.com/index.php/topic,5214.msg38936.html#new

-Don't go around saying the world owes you a living; the world owes you nothing; it was here first.-

-Assume nothing, question everything.-

GPChief

Quote from: TGed on January 04, 2009, 02:57:29 PM
Was that after grinding or no grinding at all? 
That is weird....  Even more weird IF it was grinded some.

It was grinded, took a small round file, then sand paper to clean it up some.  Both Kenny and I were surprised to find this.
2004 GTP -  3.8 Blown - Only modding for MPG.
1997 GTP  - 3.8 Blown - Too many mods to list.
1996 GTP - 3.4 DOHC - Twin to my 1997.
1995 SE - soon to be a 3.8 turbo car.
1990 TSTE x 2 white cloth
1990 TSTE x 1 maroon leather
1990 TGP - 5 speed.

GOT2B GM

I guess, I cleaned my rockers and guides with degreaser in a parts washer at work. :laugh:


Matt Shantz - 1990 Pontiac Turbo Grand Prix COLD A/C 80K mi, KAZ Hot Tuned, Birchtrax'ed +  a few mods  ......... 14.6829 @ 95.11 mph