Pinless pistons in 4t65e? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


2000-2005 Discuss your 2000-2005 Bonneville SE, SLE, and SSEi Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 12-02-2009, 07:05 PM   #1
Junior Member
Thread Starter
 
Join Date: Apr 2009
Location: Aberdeen, SD
Posts: 6
Thanks: 0
Thanked 0 Times in 0 Posts
satride is on a distinguished road
Default Pinless pistons in 4t65e?

After experiencing the rough shifts going from 1>2 and 2>3 I took my 02 SSEi to a couple tranny places to get estimates on repairs. The first guy hooked up a scanner and we took it for a long ride and he told me it needed a rebuild which would be $1500. I am located in NE South Dakota and my tranny shop options are very limited, but I did get recommendations from a couple motorheads I know about a guy 45 miles away. I took it to him and he drove it and said it would be $900 or so for him to rebuild it. I have read a considerable amount on this forum since the rebuild, unfortunately I obviously had not read enough before the rebuild. I also did not know what codes were getting generated, but I do know now that it is the infamous p1811. Trying to keep this long story short, I had him do the rebuild. This problem had always been somewhat intermittant, so when the rough shifts didn't happen after the first couple trips I was hopeful but not convinced. Sure enough it has come back (although the rough shifts are now MUCH smoother. Part of the reason I went with this guy'* work was of course the price, the recommendations but also he said he'd warranty it for 12 months unlimited mileage, the first shop said 12,000. I drive 28 - 35k a year so the unlimited was a big thing to me. Anyway, problem is back and I stopped in there and he says bring it back in and I mentioned the Pressure Control Solenoid and Rebuild kit I've since read so much about on this forum. He kinda heehawed that and when I mentioned the shift kit for the accumulator he perked up and said he thought that was probably where the problem was. Then he mentioned putting in pinless pistons rather than the shift kit. I have read a lot of stuff on here, but never seen any mention of the pinless piston for this tranny. My question to you guys is - is my tranny guy on something or onto something? Is this an option for the 4T65E?
Also, want to say THANKS to all the great contibuters for all the super info available on this forum. I may get 300k out of this Bonnie yet.

Last edited by satride; 12-02-2009 at 08:27 PM.
satride is offline   Reply With Quote
Old 12-02-2009, 07:51 PM   #2
Retired Senior Admin

Expert Gearhead
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

I'm far from a expert on trannys, but I have never heard of a pinless pistons. Personally I feel cleaning up the cylinder walls, replacing the O rings and adding the spacers from a shift kit will correct your problem. We have a gearhead here, spg358, he'* our site transmission expert.
Danthurs is offline   Reply With Quote
Old 12-02-2009, 08:34 PM   #3
Junior Member
Thread Starter
 
Join Date: Apr 2009
Location: Aberdeen, SD
Posts: 6
Thanks: 0
Thanked 0 Times in 0 Posts
satride is on a distinguished road
Default

Thanks, hopefully he'll chime in here at some point. I am hoping to bring it back to the guy next week.
Dan, I've seen your write-up on making your own spacers. What would be an application where a person would use that pipe/tube that you showed? I've seen someone say they got it at Lowe'* - that'* 200 miles for me. I've checked a couple places here and my neighbor who'* a machinist suggested getting it made at an aluminum shop. Seems like you guys are using something much more common than that.
satride is offline   Reply With Quote
Old 12-02-2009, 08:37 PM   #4
Retired Senior Admin

Expert Gearhead
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

Do you have like a home depot or menards, farm and fleet, something like that. just ask for a seamless tube with the detentions I have listed.
Danthurs is offline   Reply With Quote
Old 12-02-2009, 10:38 PM   #5
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

I've never heard of pinless pistons either. Nor do I understand what they'd accomplish. If you don't hear from our expert soon, look up TripleEdgePerformance.com and give Dave a call. Great guy, been building transmissions his whole life. If it'* available for the 4T65E, he'* heard of it.
BillBoost37 is offline   Reply With Quote
Old 12-03-2009, 06:57 PM   #6
Senior Member
Posts like a Northstar
 
Join Date: Oct 2009
Location: Boston Mass
Posts: 684
Thanks: 0
Thanked 0 Times in 0 Posts
sgp358 is on a distinguished road
Default

Quote:
Originally Posted by Danthurs View Post
I'm far from a expert on trannys, but I have never heard of a pinless pistons. Personally I feel cleaning up the cylinder walls, replacing the O rings and adding the spacers from a shift kit will correct your problem. We have a gearhead here, spg358, he'* our site transmission expert.
I agree with Dan and as of yet, I haven't heard of pinless pistons. I understand why someone would want them as the pin bore in the piston usually wears and allows a loss of accumulator oil. So when you have the accumulator pistons out, make sure that the pin does not wobble in the bore of the piston.

I just checked and Sonnax does offer pinless pistons for a 700R/4L60/4L60E, but I didn't see anything listed for 4T65E.
sgp358 is offline   Reply With Quote
Old 12-04-2009, 01:23 PM   #7
Junior Member
Thread Starter
 
Join Date: Apr 2009
Location: Aberdeen, SD
Posts: 6
Thanks: 0
Thanked 0 Times in 0 Posts
satride is on a distinguished road
Default

Thanks for all the feedback. I talked to the tranny guy this morning and he said he did not find pinless pistons for the 4T65E either, so at least we all on the same page there. I am bringing it back to him Monday and will bring the shift kit spacers I made along, he'* already said he will take care of getting this fixed at no additional charge. He did tell me they the were in the accumulator and replaced the o-rings when he did the refurb, so, by all the other tranny strings I've read here this could end up being the PCS when it'* all said and done. We'll try the spacers first.
satride is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
2002 4t65e-HD into 1999 4t65e? buckykattnj Performance, Brainstorming & Tuning 6 02-15-2011 07:36 AM
4T65E-HD to 4T65E swap? woodturner2 General GM Chat 2 11-15-2010 08:53 AM
Cleaning sludge off pistons bigJ 1992-1999 7 12-20-2003 02:13 AM
Ceramic coating your pistons DrJay Performance, Brainstorming & Tuning 9 06-02-2003 11:53 AM
SC Pistons BonneAlien 1992-1999 16 02-25-2003 02:03 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 05:21 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.