Re: [Amc-list] Flexplate & Mini-Starter Questions for 727 auto

[Wrambler242@xxxxxxxxxxx]

lets see if I can get this clearer
Answers in between

--
Mark Price
Morgantown, WV
1969 AMC Rambler, 4.0L, EFI, T-5
2004 Grand Cherokee Laredo, 4.7L, Quadratrc II
" Chronic Pain Hurts"

 -------------- Original message ----------------------
From: Greg Taylor <amundaza@xxxxxxxxx>
> I am planning to buy a 6-cylinder flexplate for the neutral-balance build on the 
> 304 stroker motor.  This will be replacing the weighted flexplate for my 1989 
> Grand Wagoneer's current 360.
>    
>   I have researched the various flexplates at www.partsamerica.com for a 1989 GW 
> (360, weighted) a 1989 YJ (258 non-weighted) and a 1980 GW (258 non-weighted).  
> They all are the same diameter, same tooth count and pitch.  The 1980 258 unit 
> is about $20 less than the 1989 258 unit (YJ).
>    
>   I would like to run a high torque mini starter, in place of the stock Chrysler 
> "mini-starter", since I'll be pushing 10:1 compression with the stroker.  I had 
> talked with a guy on Ebay (happens to live not far from my work), who sells 
> Mini-starters and he said that the mini-starter would not work with my 
> 1988+newer GW 727.
>    
>   Is there something different about the 1988+newer trannies or flexplates, that 
> would prohibit the use of the mini-starter?  Are the bolt holes different in the 
> tranny and/or starter?

The difference is not in the tranny or starter mount pattern.
The difference is in the ring placement.
It is farther forward on the flywheel that uses the Jeep "mini starter".
If you swap flywheels you can swap starter styles.
Jim mentions converter bolt up differences too, that I do not know and won't hazard a guess on that.

>   Could I run the 1980 258 flex plate and then use the high-torque mini starter?

Yes! if the converter boltup is the same, pay attention to offset as well as bolt up!!!
>    
>   Is the stock Chrysler 'mini starter' strong enough to handle 10:1 and should I 
> just stick with it?  Please keep in mind that I still have to swap from a 360 
> flex plate, to a neutrally balanced (no weight) 258 flexplate for my stroker 
> build (it will be internally balanced).

I would bet the stock mini will do the trick. But, that is not a proven fact.
A lot depends on your cam choice! Will it have high cranking compression?? That is the actual load on the starter.

>   Also, the stock mini-starter has full power to it and then a supplemental 
> ignition wire that engages the starter.  Could this be why a mini-starter won't 
> 'work'?

Nope, To use the mini, just bridge the large mini terminal to it's smaller solenoid terminal. Done.
Due to redundency in adding my YJ efi into my Wrambler it actualy runs two relays to the single wire old style starter. It was easier then trying to delete one and I was getting tired of wiring!!! Still works great years later. though in my head are plans to build a stroker, add a World class 300ftlb cobra T5, put in a smaller 4.0L flywheel and the late model starter.  

Last, your is an 88 with the small starter? well, I'd get a 88 Wrangler 4.2L flywheel and a fresh starter or use yours if it is in good shape, again depending on cam choice and cranking compression.

My $.02
 
>   Thanks for the feedback, all!
> 
> 
> Sincerely,
> Greg Taylor :)  <><
> 
> And the testimony is this, that God has given us eternal life, and this life is 
> in His Son. He who has the Son has the life; he who does not have the Son of God 
> does not have the life.  - 1 John 5:11-12
>        
> ---------------------------------
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