MY TRANSMISSION REPAIR 8hp90

[hellno]

ROY TOLD ME WITH WAHT HE IS SENDING ME THAT I WILL BE ABLE TO GET THE CLEARANCE CORRECT WITHOUT ANY MACHINING ,HE JUST ASKED ME TO LET HIM KNOW HOW I STACK IT TO ACHIEVE MY SET UP

 

[hellno]

HERES THE PUMP BOLT KIT I SPOKE ABOUT THAT YOU WILL NEED IF EVER REMOVING THE PUMP BECAUSE THEY ONE TIME USE ,THERE IS ALSO A PROPER TORQUE PROCEDURE WHEN INSTALLING THEM ,
IN ORDER TO SEAT THE OIL PUMP ASSY PROPERLU TIGHTEN BOLTS 1,7 AND 9 TO6 N.M ( 53 INCH LBS) ,THEN WORKING CLOCKWISE PATTERN BEGINNING WITH NUMBER 1 TIGHTEN TO10 N.M( 89 INCH LBS ) THEN WORKING IN A CLOCK WISE PATTERN TIGHTEN AN ADDITIONAL 90 DEGREES
As you can see the bolt kit comes with new from seal and input shaft oring

 

[Blkout]

Great thread, its been a very interesting read. Can't wait to see the final outcome and result.

 

[cole3986]

HERES THE PUMP BOLT KIT I SPOKE ABOUT THAT YOU WILL NEED IF EVER REMOVING THE PUMP BECAUSE THEY ONE TIME USE ,THERE IS ALSO A PROPER TORQUE PROCEDURE WHEN INSTALLING THEM ,
IN ORDER TO SEAT THE OIL PUMP ASSY PROPERLU TIGHTEN BOLTS 1,7 AND 9 TO6 N.M ( 53 INCH LBS) ,THEN WORKING CLOCKWISE PATTERN BEGINNING WITH NUMBER 1 TIGHTEN TO10 N.M( 89 INCH LBS ) THEN WORKING IN A CLOCK WISE PATTERN TIGHTEN AN ADDITIONAL 90 DEGREES
As you can see the bolt kit comes with new from seal and input shaft oring View attachment 7510 View attachment 7511

Now this is getting really interesting, someone with the skill set to perform the work is working directly with manufacturers trying to improve the longevity of the parts. Just maybe I can get a few more tenths outta my old girl with these parts. We may have another A8 vendor here in the making.

 

[Hpindy]

Now this is getting really interesting, someone with the skill set to perform the work is working directly with manufacturers trying to improve the longevity of the parts. Just maybe I can get a few more tenths outta my old girl with these parts. We may have another A8 vendor here in the making.

I second this!

Sent from my BBF100-2 using Tapatalk

 

[Jack_Toepfer]

Keep up the good work. Not sure how I missed this thread.

 

[hellno]

In case you tackle one of these transmissions yourself you will need theses adapt a case sleeves to remove the c d and e clutches from the aluminum shells without them you will break the shells don’t kid your self thinking you can do it with out them
Also you remove the rings a 180 degrees from the ring opening

 

[Hpindy]

In case you tackle one of these transmissions yourself you will need theses adapt a case sleeves to remove the c d and e clutches from the aluminum shells without them you will break the shells don’t kid your self thinking you can donut with out them
Also you remove the rings a 180 degrees from the ring opening View attachment 7514 View attachment 7515

The right tools for the right job !

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[SilverBillet]

In case you tackle one of these transmissions yourself...

 

[Marine121]

Great read thanks for sharing your experience

 

[Speedy!]

Tackle this myself, LOL I'm bringing it you you @hellno LOL

I noticed that as well I’m going to see if curt is willing to change the tune But what concerns me is if you go in change shift pressures in one clutch you might also be Changing shift timing as in the time between one clutch releasing and the other clutch applying not enough and you have overlap ( bind up) too much and you have a clutch releasing and the other clutche not coming on fast enough would cause a flair up which in both circumstances can cause clutch burn up so I think all clutch pressure would need to be changed together

What I'm seeing in the tune, shift pressure and shift timing, aka fill time, are two different settings per gear.

I did some testing today. FYI, standard Hellcat doesn't like Redeye torque converter settings. Felt like some kinda weird stall converter. I'm trying to get my "normal" mode shifts at WOT to have the same firmness as I have in "Sport". So far no dice. Gonna have to ask Mike.

I'm also wondering how much shift pressure is enough but not too much. Need to hear from folks with experience. In some cases in the tune "performance" is less than "sport" and some it's more.

I also learned Demon and Redeye trans tunes are identical from what I'm seeing and I didn't see any difference in Demon standard vs Demon crate either for trans stuff.

I think the benchmark for trans durability is Demonology. He had over 700 passes stock and Lord knows how many now at 1000HP+ and the guy races the car at least 3 nights a week.

 

[coolblue]

I think the benchmark for trans durability is Demonology. He had over 700 passes stock and Lord knows how many now at 1000HP+ and the guy races the car at least 3 nights a week
Amazing.

Oh yea....you put the RE in with a 'regular' hellcat tranny, correct? So now your basically trying to retro tune the tranny to RE specs and no good?

 

[hellno]

Tackle this myself, LOL I'm bringing it you you @hellno LOL

I’m curious about the demon trans information myself, the demon stall should give even lower 60fts


What I'm seeing in the tune, shift pressure and shift timing, aka fill time, are two different settings per gear.

I did some testing today. FYI, standard Hellcat doesn't like Redeye torque converter settings. Felt like some kinda weird stall converter. I'm trying to get my "normal" mode shifts at WOT to have the same firmness as I have in "Sport". So far no dice. Gonna have to ask Mike.

I'm also wondering how much shift pressure is enough but not too much. Need to hear from folks with experience. In some cases in the tune "performance" is less than "sport" and some it's more.

I also learned Demon and Redeye trans tunes are identical from what I'm seeing and I didn't see any difference in Demon standard vs Demon crate either for trans stuff.

I think the benchmark for trans durability is Demonology. He had over 700 passes stock and Lord knows how many now at 1000HP+ and the guy races the car at least 3 nights a week.

 

[hellno]

But my trans was shifting very firm before I damage it but the future is looking bright with possible 9.2s

 

[Hpindy]

Tackle this myself, LOL I'm bringing it you you @hellno LOL



What I'm seeing in the tune, shift pressure and shift timing, aka fill time, are two different settings per gear.

I did some testing today. FYI, standard Hellcat doesn't like Redeye torque converter settings. Felt like some kinda weird stall converter. I'm trying to get my "normal" mode shifts at WOT to have the same firmness as I have in "Sport". So far no dice. Gonna have to ask Mike.

I'm also wondering how much shift pressure is enough but not too much. Need to hear from folks with experience. In some cases in the tune "performance" is less than "sport" and some it's more.

I also learned Demon and Redeye trans tunes are identical from what I'm seeing and I didn't see any difference in Demon standard vs Demon crate either for trans stuff.

I think the benchmark for trans durability is Demonology. He had over 700 passes stock and Lord knows how many now at 1000HP+ and the guy races the car at least 3 nights a week.

That makes 2 of us going to visit him when the time comes

Sent from my BBF100-2 using Tapatalk

 

[hellno]

Speedy keeps messing with that trans tune he might be seeing me more sooner then later 😂😂

 

[HWDan]

Thanks for this! Brings back memories hanging out at my friends dad's transmission shop as a teen, helping to re & re tranny's just to learn stuff like this. My friend eventually took over from his dad and is still in busines, but now mostly just takes on local MB dealer work farmed out to him.

 

[Speedy!]

Lol I'm not doing anything crazy. Just moving settings from sport to normal. Mike taught me not to exceed max settings from the OEM. I may have found what's needed. It looks like line pressure is just one variable.

 

[motorhead]

https://www.sonnax.com/tech_resources/263-a-new-path-for-zf

https://www.motor.com/newsletters/20121010/WebFiles/MMM_ZF_8HP_Tranny.pdf

https://d2q1ebiag300ih.cloudfront.n...nnax_ZF8_Webinar_Part_1_of_2.pdf?v=1485788168

https://d2q1ebiag300ih.cloudfront.n...nnax_ZF8_Webinar_Part_2_of_2.pdf?v=1485788168

 

[jgilj]

Cole look at the e and d pack
The steel s tell it more so then the clutches , now stay off that shine buddy View attachment 7445 View attachment 7446

Definitely has burn or heat marks ! Great thread. John