Non MB trans to MB engines - Page 42 - PeachParts Mercedes-Benz Forum

Tony H · #**616** 12-10-2019, 08:20 PM

They said the auction had an incorrect description=it is for 6 cyl engines.

Quote:

Originally Posted by Tony H

They are still insisting it will fit the M116. I asked them to show evidence that it will fit. Yes if I embark on this venture I would need a disk that fits the T-5 shaft but that is probably one of the easier details to address. Good to know the stock clutch will live in a demanding situation. I'm sure this would be costly and time consuming-I may just be satisfied with the 4spd box and 3.27 axle. Where I live now there is no freeway within 2 hrs and speed limit on 101 is 55 so not a lot of need for 5th gear.

Tony H · #**617** 12-10-2019, 08:35 PM

I took my concept of a married 722.004 to T5 Bellhousing to my machine shop and they said no problem-they do stuff of that nature frequently with very high precision. So I need to decide if I want to embark. One of the chief reasons I wanted to do this is so I will have a transmission that can be replaced/repaired vs the original that would be difficult to replace.

fonzi · #**618** 12-10-2019, 10:13 PM

Quote:

Originally Posted by Tony H

I took my concept of a married 722.004 to T5 Bellhousing to my machine shop and they said no problem-they do stuff of that nature frequently with very high precision. So I need to decide if I want to embark. One of the chief reasons I wanted to do this is so I will have a transmission that can be replaced/repaired vs the original that would be difficult to replace.

Did they give you an idea of the cost to make it happen?

Lots of aluminum welding required expensive welding equipment. Right?

Sent from my iPhone using Tapatalk

Tony H · #**619** 12-11-2019, 03:07 AM

No cost yet-I don't have the actual parts to give them. This is expensive territory though. I'm starting to think a Tremec TKO transmission might be a better choice as more versatility, strength and gear choices. Different bellhousing than the T5 though.

rwd4evr · #**620** 12-11-2019, 02:56 PM

Quote:

Originally Posted by Tony H

No cost yet-I don't have the actual parts to give them. This is expensive territory though. I'm starting to think a Tremec TKO transmission might be a better choice as more versatility, strength and gear choices. Different bellhousing than the T5 though.

I'm. Not saying the tko is a bad choice at all. But the t5 will take all the power a m117 will give it naturally aspirated. There are some serious SBF 5.0 mustangs running them stock. 3rd gear can be a weak link apparently though. Astro performance beefs them up as well. A . 73 od later 6 cly t5 is about perfect gear wise with your 3.27 I would think. The 3.69 would have been really nice though. 3.35 first is better than the useless 3.94 (I think) g76. A close ratio tko would be tits though. Your machine shop could have a line out the door if they can do this right and reasonable.

Sent from my SM-J737A using Tapatalk

OM616 · #**621** 12-13-2019, 12:01 AM

Quote:

Originally Posted by rwd4evr

Your machine shop could have a line out the door if they can do this right and reasonable.

And what would be reasonable?

Tony H · #**622** 12-13-2019, 02:33 AM

I figure even if someone else comes up with a solution I would still need to buy it somewhere. I'm sure the bell will be $$$ to get it done to the necessary strength and precision. Presently the car this is for is in a storage unit as we have moved twice in the last few years. I'm going to work out the entire solution before I make the commitment to the bellhousing(except for some parts to test the feasibility).
Some of the available OD ratios are a little tall since I installed the 3.27-I kind of regret it a little. The Tremec TKO600 is available with 2.87, 1.89, 1.28, 1.00, .82 so 1st gear wouldn't be uselessly low(like it is with the original trans) and 60mph rpm of about 2100(with the 3.27) and 5 close ratio gears.

97 SL320 · #**623** 12-13-2019, 02:41 PM

Quote:

Originally Posted by OM616

And what would be reasonable?

The " job shop " machine shop I deal with charges $ 150 hr , " automotive " machine shop by the operation not hr.

OM616 · #**624** 12-14-2019, 12:39 PM

Quote:

Originally Posted by 97 SL320

The " job shop " machine shop I deal with charges $ 150 hr , " automotive " machine shop by the operation not hr.

Exactly, and that only covers making the parts based on a print. The design time to figure out what a given part needs to look like, along with making the cad models / prints as well as the cost of materials / tooling have to be factored in as well.

More often then not, the simplest parts require the most design time to get them boiled down to that simple level. Then people say, "why are you charging me so much to make such a simple part?" lol

Roncallo · #**625** 12-15-2019, 12:17 PM

Quote:

Originally Posted by OM616

Exactly, and that only covers making the parts based on a print. The design time to figure out what a given part needs to look like, along with making the cad models / prints as well as the cost of materials / tooling have to be factored in as well.

More often then not, the simplest parts require the most design time to get them boiled down to that simple level. Then people say, "why are you charging me so much to make such a simple part?" lol

Yup see post 603.

There is a reason I haven't jumped into making one of these yet.

Tony H · #**626** 12-15-2019, 11:13 PM

Once I get the sticker shock of the bellhousing I may change my mind. I'm sure the driveshaft will be pricy as it will need to be a custom solution to mate up to the slide yoke. I guess it depends on how much I want it. Everything else is fairly straightforward.

rwd4evr · #**627** 12-24-2019, 03:23 PM

Quote:

Originally Posted by Tony H

Once I get the sticker shock of the bellhousing I may change my mind. I'm sure the driveshaft will be pricy as it will need to be a custom solution to mate up to the slide yoke. I guess it depends on how much I want it. Everything else is fairly straightforward.

I think the drive shaft will be reasonable at the right shop. One piece with a Ford 8.8 universal joint adapter straight to the rear axle. They bolt on like the original on I think 98 and up rear axles.

Sent from my SM-J737A using Tapatalk

Tony H · #**628** 12-24-2019, 07:48 PM

After the holidays I am going to be in touch with my driveline specialist Driveshafts.com
They rebuilt the 3 piece driveshaft in my coupe and specialize in Mercedes/BMW drivelines. They design custom solutions. I know the 1 piece shaft is simpler but the multi piece shaft has it's place-much lower critical speed for a long driveshaft. Also the 1 piece shaft is going to be larger-3 or 4". My original shaft is 65" long so critical speed would be an issue with 1 piece. There is also 1/2 critical speed which causes vibration at normal highway speeds.

rwd4evr · #**629** 12-27-2019, 07:02 PM

Here's an interesting car/swap. No really specific details but they obviously built a jig that bolts to the crank the trans bearing retainer slots into to center it up.

https://youtu.be/Nk1K3zhS3W8

Sent from my SM-J737A using Tapatalk

Tony H · #**630** 12-28-2019, 01:56 AM

Interesting video.
I met with the machine/fab shop today with more detailed info on the bellhousing. He said without the actual parts he cannot give an estimate but I tried to get a ballpark amount. He was hesitant but said a few thou would not be out of the question. He want's to cut off as much of the MB bell and use as much of the Tremec as possible. As I suspected he said a interface flange between the two would probably be needed.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode