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  #1  
Old 08-08-2013, 02:56 AM
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flywheel bolts

can i use normal bolts in the place on the special mb bolts on my 300d? the bolts sure are costly

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84 300sd 2.47 dif 360k
26 mpg needs lots of love
given to me in pitty

89 civic hatchback auto 140k
33mpgs soon to be low to mid 40's
been in the family since mile 1

85 300d with unknown knock. driven over 30k with knock and still going. sold for $800
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Old 08-08-2013, 07:12 AM
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IIRC these are stretch type fasteners. I do not know what would happen if you used regular fasteners but the work involved resolving any issue with them would not be worth the cost savings. Stick with the MB stretch fasteners for this application in my opinion.
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Old 08-08-2013, 09:03 AM
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Quote:
Originally Posted by engatwork View Post
IIRC these are stretch type fasteners. I do not know what would happen if you used regular fasteners but the work involved resolving any issue with them would not be worth the cost savings. Stick with the MB stretch fasteners for this application in my opinion.
X2
If you were to use regular hi-tensile bolts, what torque would you do them to? They will not stretch like the proper ones do.
If your old bolts are within the max allowed length, you may be able to reuse. Though, I would no wish to need to pull it to bits again because a bolt or 2 let go.
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I no longer question authority, I annoy authority. More effect, less effort....

1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles
1987 250td 160k miles English import
2001 jeep turbo diesel 130k miles
1998 jeep tdi ~ followed me home. Needs a turbo.
1968 Ford F750 truck. 6-354 diesel conversion.
Other toys ~J.D.,Cat & GM ~ mainly earth moving
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Old 08-08-2013, 03:38 PM
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I see the problem differently. I think if you find comparable Blots at Hardware store they would likely be Asian made.
That might be OK if they were Japanese or maybe Korean but the other Countries?????

At the local Industrial Hardware Store that kind of specializes in Nuts and Bolts I listened in on a conversation.
This Guy owned some Heavy Earth Moving Equipment and He said that if He bought the same Grade of Chinese Bolts in a Moth of use the Popped off.
If He bought the USA Bolts He would get several years of use out of them before they Popped.

1109900419 The part number for the Automatic Transmission Flywheel Bolts.
It may be that place I suggested in My PM does not sell them any more but I am still looking.
Added: OK I plugged the Part number into the search feature and they do have them but they are $6.40 each.
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  #5  
Old 08-08-2013, 09:34 PM
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What is the max stretch of these bolts? Anyone got the spec sheet on this? I am interested in the manual flywheel bolts.

It should posted in this thread anyway, down the road, when someone searches it will be posted.
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Old 08-08-2013, 09:40 PM
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Check startekinfo.com
Look in shop resources, w123 car and you will find a free manual for the car.
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Old 08-08-2013, 09:46 PM
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Originally Posted by bt1211 View Post
What is the max stretch of these bolts? Anyone got the spec sheet on this? I am interested in the manual flywheel bolts.

It should posted in this thread anyway, down the road, when someone searches it will be posted.
Just in case someone is not in the mood to look up the part number:
Russian part site. Nearly all in in English.
http://www.auto-parts.spb.ru/cat/cats/m.mycat?cat=mb&client=dr2000
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  #8  
Old 08-08-2013, 10:15 PM
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Quote:
Originally Posted by Diesel911 View Post
I see the problem differently. I think if you find comparable Blots at Hardware store they would likely be Asian made.
That might be OK if they were Japanese or maybe Korean but the other Countries?????

At the local Industrial Hardware Store that kind of specializes in Nuts and Bolts I listened in on a conversation.
This Guy owned some Heavy Earth Moving Equipment and He said that if He bought the same Grade of Chinese Bolts in a Moth of use the Popped off.
If He bought the USA Bolts He would get several years of use out of them before they Popped.

1109900419 The part number for the Automatic Transmission Flywheel Bolts.
It may be that place I suggested in My PM does not sell them any more but I am still looking.
Added: OK I plugged the Part number into the search feature and they do have them but they are $6.40 each.
This is very true. They crack as soon as you load them up. They probably start with low grade steel & try & get the required hardness by heat treating & quenching. They end up as brittle as a fresh carrot.
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Grumpy Old Diesel Owners Club group

I no longer question authority, I annoy authority. More effect, less effort....

1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles
1987 250td 160k miles English import
2001 jeep turbo diesel 130k miles
1998 jeep tdi ~ followed me home. Needs a turbo.
1968 Ford F750 truck. 6-354 diesel conversion.
Other toys ~J.D.,Cat & GM ~ mainly earth moving
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  #9  
Old 08-09-2013, 12:45 AM
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Location: chicago
Posts: 141
Thanks for the Russian link.

*EDIT*

Found it under startek
disk 2
I used 240d
main 03 "cylinder crankcase and crank assembly"
section 410 "removal and install flywheel"


as new 8.5-.02
min. dia. 8.1
length 20
this is for a manual trans flywheel bolts

Just to clarify. Measure at the neck (waisted shank)area not the thread area, to see how far the bolts have stretched. After measuring my used bolts, they were in the 8.3 to 8.4 range, so these are within spec.

Last edited by bt1211; 08-14-2013 at 09:00 AM. Reason: found info I was asking for
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  #10  
Old 08-09-2013, 03:16 AM
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Posts: 383
what is the max stretch on these bad boys anyway? haynes manual sucks!
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84 300sd 2.47 dif 360k
26 mpg needs lots of love
given to me in pitty

89 civic hatchback auto 140k
33mpgs soon to be low to mid 40's
been in the family since mile 1

85 300d with unknown knock. driven over 30k with knock and still going. sold for $800
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  #11  
Old 08-09-2013, 10:35 AM
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Join Date: Nov 2010
Location: chicago
Posts: 141
here is a link to another thread with the info on auto trans bolts
Flywheel bolt size + Tightening torque

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