Tiptronic rebuild
#32
Alright, now for an update. I flew into Dallas this past Friday to pick up my car. Got to FixEuro around 2pm; spoke with the mechanic that did the actual rebuild (Steve) and the owner of the shop (very nice people); and drove the 500+ miles home around 3:30pm arriving around 11pm. The drive was uneventful. The transmission up-shifts and down-shifts very smoothly and strongly. I "feels" to me like it shifts a tab faster as well. I really like the increased stall speed because the car seems to accelerate a bit harder/faster (this is based on "seat-of-the-pants" equipment ). The car takes off from a stop pretty much like stock as far as when the transmission seems to "catch" even with the increased stall speed. My fear that the transmission would have a slight hesitation from a standstill because of the increased stall never materialized.
The final summary of the work: The transmission was completely cleaned and rebuilt; extra clutches and steel were placed on the K1, K2 and B1 sections (could not put more clutches/steel at K3, B2 or B3 without machinging some parts); with the exception of the front and rear seals that they got from IPT in New Jersey, all the replacement parts (steels and electrical components) were from Mercedes that are used on the SL55/SL65, Exeddy and Raybestus clutches, and Mercedes synthetic trans fluid (did not put in the trans. fluid additive because could not verify that it was okay to use with the Mercedes fluid; gave me a bottle of the additive just in case I decide to put it in myself); increased stall speed by 400-500 rpm; did not do anything to increase the capacity of the oilpan or to increase the flow of fluid; because FixEuro could not locate a vender to sell them just the severely cracked flex coupling I had to buy a completely new front drive shaft; and repaired outer torn boot on driver's side front half-shaft. FixEuro was very confident that my tiptronic will hold more torque than a stock unit, but did not feel prudent to try to give me a hp/torque figure (although I did wrangle Steve to feel comfortable estimating around 650-700 ft/lds of torque) Total cost out the door: $6,231.92
My thoughts: It cost me about $1,000 more than I wanted to spend, but then again the new drive shaft, custom torque convert work and half-shaft boot replacement accounted for the additional $1000. Given that I will not be upgrading my turbos beyond the K24/18g level I feel that my newly rebuilt tiptronic will more than handle my planned modifications and power/torque levels. Those of you going higher (say K24/20g, or 3070+ turbos, E85, etc.) might feel more comfortable going with shops that gaurantee 1000hp capable tips that machine the tip in order to fit more clutches/steels at every level and that increase the fluid flow by porting out the flow lines. You will more likely than not end up spending more than the $5,200 that I spent.
I plan to update this thread in the next few weeks/months to let everyone know how the tip is holding up and after I have had some time with it to give you my impressions of the work performed by FixEuro. Overall, the guys at FixEuro were very professional, courteous, knowledgeable and, at this point in time, I don't regret having them do the work on my car. The work (parts/labor) is gauranteed for 1 year or 12k miles (whichever comes first).
The final summary of the work: The transmission was completely cleaned and rebuilt; extra clutches and steel were placed on the K1, K2 and B1 sections (could not put more clutches/steel at K3, B2 or B3 without machinging some parts); with the exception of the front and rear seals that they got from IPT in New Jersey, all the replacement parts (steels and electrical components) were from Mercedes that are used on the SL55/SL65, Exeddy and Raybestus clutches, and Mercedes synthetic trans fluid (did not put in the trans. fluid additive because could not verify that it was okay to use with the Mercedes fluid; gave me a bottle of the additive just in case I decide to put it in myself); increased stall speed by 400-500 rpm; did not do anything to increase the capacity of the oilpan or to increase the flow of fluid; because FixEuro could not locate a vender to sell them just the severely cracked flex coupling I had to buy a completely new front drive shaft; and repaired outer torn boot on driver's side front half-shaft. FixEuro was very confident that my tiptronic will hold more torque than a stock unit, but did not feel prudent to try to give me a hp/torque figure (although I did wrangle Steve to feel comfortable estimating around 650-700 ft/lds of torque) Total cost out the door: $6,231.92
My thoughts: It cost me about $1,000 more than I wanted to spend, but then again the new drive shaft, custom torque convert work and half-shaft boot replacement accounted for the additional $1000. Given that I will not be upgrading my turbos beyond the K24/18g level I feel that my newly rebuilt tiptronic will more than handle my planned modifications and power/torque levels. Those of you going higher (say K24/20g, or 3070+ turbos, E85, etc.) might feel more comfortable going with shops that gaurantee 1000hp capable tips that machine the tip in order to fit more clutches/steels at every level and that increase the fluid flow by porting out the flow lines. You will more likely than not end up spending more than the $5,200 that I spent.
I plan to update this thread in the next few weeks/months to let everyone know how the tip is holding up and after I have had some time with it to give you my impressions of the work performed by FixEuro. Overall, the guys at FixEuro were very professional, courteous, knowledgeable and, at this point in time, I don't regret having them do the work on my car. The work (parts/labor) is gauranteed for 1 year or 12k miles (whichever comes first).
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10-02-2015 01:04 PM