June 23, 2018, 11:16:58 PM

Author Topic: DD Flywheel question  (Read 2368 times)

Offline DaveNCari

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DD Flywheel question
« on: November 05, 2012, 09:52:42 AM »
I am installing a tach on my 4104...

Stewart-Warner has a table in their instructions that says "ALL DD" 118 Teeth

Can anyone confirm that the 671 has 118 teeth on its flywheel?

That simply strikes  me as odd...that EVERYTHING powered by Detroit Diesel has the same number of teeth on their flywheels....especially in the pre-electronics days when there would have been no reason do do so.....

Dave

Coming soon.....need of a bus-friendly RV park.....that values Liberty!

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Offline luvrbus

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Re: DD Flywheel question
« Reply #1 on: November 05, 2012, 10:02:58 AM »
You are miss reading the instructions there are several different flywheels the sae 1 bell housing and 19 inch flywheel have 118 teeth a 17 inch will have less teeth with the SAE 2 bell housing same deal with a 92 series or a 53 series  

good luck
« Last Edit: November 05, 2012, 10:05:51 AM by luvrbus »
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Offline Utahclaimjumper

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Re: DD Flywheel question
« Reply #2 on: November 05, 2012, 10:28:55 AM »
You also should be able to drive your tach from the front pulley or the generator/alternator.>>>Dan
Utclmjmpr 
 EX 4106 (presently SOB)
Cedar City, Ut.
 72 VW Baja towed

Offline DaveNCari

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Re: DD Flywheel question
« Reply #3 on: November 05, 2012, 10:45:42 AM »
OK...I am obviously new to this "big engine" stuff...so how do I tell if I have the SAE1 or SAE2 bell housing??

My 4104 has its original drivetrain...the 671 and the Spicer 4spd...

If I take a pic of the engine/trans...can a knowing eye simply see the difference?

Dave
Coming soon.....need of a bus-friendly RV park.....that values Liberty!

Watch this space....

Offline luvrbus

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Re: DD Flywheel question
« Reply #4 on: November 05, 2012, 10:51:41 AM »
I take it you are using a transducer/magnetic sensor that screws into the plug hole in the bottom or the side of the bell housing ?
« Last Edit: November 05, 2012, 10:56:32 AM by luvrbus »
Life is short drink the good wine first

Offline DaveNCari

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Re: DD Flywheel question
« Reply #5 on: November 05, 2012, 10:53:46 AM »
Indeed.....

 ;D

DG
Coming soon.....need of a bus-friendly RV park.....that values Liberty!

Watch this space....

Offline TomC

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Re: DD Flywheel question
« Reply #6 on: November 07, 2012, 03:24:30 PM »
Most of the 2 stroke engines have a built in tach drive coming off the blower somewhere.  On my 8V-71 it was on the end of the blower. I bought the synchronous generator and powered my tach off that.  My tach is an Isspro with engine hour meter.  Good Luck, TomC
Tom & Donna Christman. '77 AMGeneral 10240B; 8V-71TATAIC V730.