[DeTomaso] DB starter final verdict

[Tomas Gunnarsson]

Boyd,
 
Thanks for sharing your findings and the final verdict. This is
something that often fails on forums and mail lists like this. I think
it's worth mentioning that the original firewall solenoid has no place
in the application of a DB type starter. Get rid of it and eliminate a
possible source of problems.
 
Tomas

<-----Ursprungligt Meddelande----->

 	  	 From: Boyd Casey [boyd411 at gmail.com]
Sent: 31/7/2013 2:23:22 AM
To: detomaso at poca.com
Subject: [DeTomaso] DB starter final verdict 

Well I have always been told to admit when I was wrong and I have to
admit 
that I was a least half wrong on this one. I installed my new IMI Hi
torque 
starter today and it took around 4 hours while the DB Electric starter 
takes around two hours but there is a good reason for this. The IMI Hi 
Torque is a much better constructed starter that uses Nippon denso 
components and the starter motor housing,solenoid housing , mounting
plate, 
spacer are machined out of aluminum instead of stamped from cheap steel.
the IMI has a mounting plate with 18 mounting holes so you can index the
starter to find the optimum position for your engine and headers , while
the DB just goes in one way, the IMI is also a precision piece with the 
drive gear designed to interface with the fly wheel within a tolerance
of 
between .04 an .1" so all the test fitting and positioning is much more 
time consuming. The IMI is a gear reduction starter ,but it is not a 
permanent magnet so it does not use the PMGR wiring that is problematic
to 
the life expectancy of starter solenoids. It can also allow a starter to
act as a generator and cause engine run on when the solenoid fails to 
disengage from the flywheel quickly enough. Now as far as my DB starter 
failures the first starter that failed had a defective solenoid . The 
second DB starter did not fail. ( so me condemnation of them was at
least 
partially unfair) my fire wall mounted solenoid had a crack in it that
was 
not visible until it was removed from the car. It was only working 
intermittently and was also sticking either on or off. So a $12 failed
part 
got me to spend $ 500+ because I didn't do a thorough diagnostic. 
I do have to say that although I hate to spend money unnecessarily their
is 
no question in my mind that the IMI starter is clearly a better
constructed 
product then the DB Electric starter which is cheap and tinny when 
compared to the IMI Hi Torque. So there you have it ,and Dave I
apologize , 
you were right there was an electrical fault in my starter system. 
Boyd 
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