Will a 617 physically bolt to a 404 trans? - Page 2

ACAD_Cowboy · 11-02-2009, 04:55 PM

I'm right on the other side of the river in ulster county not far from kingston. Looks like I may have found a source of diesels if I need them. I've previously worked for benz NA but never got too involved with the older chassis except I keep getting drafted to service them when they come into my buddys shop. I know too much out the older SEL's and SEC and SLC than I choose too.

I can however still get factory parts at good prices which is nice.

texascadillac42 · 11-02-2009, 05:07 PM

Small world. I just talked to my buddy tonight, and he quickly measured the top set of holes in the back of the OM617 and they appeard to be the same width apart.... I should be out there next week to pickup the motor, and possibly test fit the 404 adapter plate and flywheel to the 617.

texascadillac42 · 11-17-2009, 09:32 PM

Update on my question. I confirmed that the information in one of the first posts is right. Using the 404 backing plate with the locating dowel holes drilled out slightly, the 404 backing plate will bolt up directly to the 617.

The flywheel is a direct bolt on, however the 404 flywheel is a 6 hole, and the 617 crank is 12. The flywheel will be drilled tomorrow to accept 12 bolts, instead of the standard 6. After it is drilled, it will be balanced to match the assembly that came off of the 617 originally.

From my initial measurements, the spacing of the flywheel from the adapter plate is within 2mm, so depth into the bellhousing, clutch linkage, input shaft and other related bits should not need to be modified at all.

I will set the diesel and 404 starters side by side, compare them, then clearance the block as necessary to make one of them work.

With the EGR system, vacuum pump, and AC compressor removed, the OM617 is a very compact motor, and should work very well in my application.

Mjjeeps · 11-17-2009, 09:48 PM

hmm, I like what I'm hearing. I'll wait till your finished though. Thanks for giunea piggin for us.

11-02-2009, 05:07 PM	#27
texascadillac42 Granite Guru Join Date: Apr 2003 Member # 19168 Location: Central IL Posts: 520	Small world. I just talked to my buddy tonight, and he quickly measured the top set of holes in the back of the OM617 and they appeard to be the same width apart.... I should be out there next week to pickup the motor, and possibly test fit the 404 adapter plate and flywheel to the 617. __________________ Tow Rig: 1999 F350 XLT Crew Cab DRW, 4x4, 6spd, Rickson 19.5s, Cummins 12V, SBC DD and some other stuff Trail Rig: 404 Rockmog, work in progress Current Project: M35 4x4 Pickup. 46" XLs

11-17-2009, 09:32 PM	#28
texascadillac42 Granite Guru Join Date: Apr 2003 Member # 19168 Location: Central IL Posts: 520	Update on my question. I confirmed that the information in one of the first posts is right. Using the 404 backing plate with the locating dowel holes drilled out slightly, the 404 backing plate will bolt up directly to the 617. The flywheel is a direct bolt on, however the 404 flywheel is a 6 hole, and the 617 crank is 12. The flywheel will be drilled tomorrow to accept 12 bolts, instead of the standard 6. After it is drilled, it will be balanced to match the assembly that came off of the 617 originally. From my initial measurements, the spacing of the flywheel from the adapter plate is within 2mm, so depth into the bellhousing, clutch linkage, input shaft and other related bits should not need to be modified at all. I will set the diesel and 404 starters side by side, compare them, then clearance the block as necessary to make one of them work. With the EGR system, vacuum pump, and AC compressor removed, the OM617 is a very compact motor, and should work very well in my application. __________________ Tow Rig: 1999 F350 XLT Crew Cab DRW, 4x4, 6spd, Rickson 19.5s, Cummins 12V, SBC DD and some other stuff Trail Rig: 404 Rockmog, work in progress Current Project: M35 4x4 Pickup. 46" XLs Last edited by texascadillac42; 11-18-2009 at 05:41 PM.

11-17-2009, 09:48 PM	#29
Mjjeeps MogDogg Join Date: Jun 2006 Member # 74765 Location: Paradise, CA Posts: 175	hmm, I like what I'm hearing. I'll wait till your finished though. Thanks for giunea piggin for us. __________________ www.SkywayAG.org www.4X4Him.org "Ich bin stolz, ein Deutscher zu sein" 1962 Mercedes Unimog "Doka" stretch 1993 Jeep YJ on Mog 404's 1964 Kaiser M151 MUTT --parts/icecream getter-- 1959 Jeep FC 170 future project (BBF 460, C6, 205)

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11-02-2009, 04:55 PM	#26
ACAD_Cowboy Registered User Join Date: Oct 2009 Member # 143944 Location: Hudson Valley New York Posts: 42	I'm right on the other side of the river in ulster county not far from kingston. Looks like I may have found a source of diesels if I need them. I've previously worked for benz NA but never got too involved with the older chassis except I keep getting drafted to service them when they come into my buddys shop. I know too much out the older SEL's and SEC and SLC than I choose too. I can however still get factory parts at good prices which is nice.