what distributor?

hi,
i have a question for all you experts..
i am finished with my 351 w motor, reman short block, new gt40p heads. i now need a distributor. i was going to convert my prestolite points set up, but it was hammered. so my question is... do i get another points prestolite, and use the conversion kit i already bought, or buy a converted prestolite , or mallory, msd, or dui, or???
my engine is a non auto rotation, and it is going in my fish nautique

i have the prestolite conversion i was going to use on my old dist. i can return it though and buy whatever. at this point i am so deep into my wallet, whats another couple hun....
my concerns are reliability, (are parts available if i am down in baja somewhere) fuel economy as it is used for a offshore fishing boat, and of course performance differences.
thx for any feedback, i need to pull the trigger on this as it is my last need
chris

i called dui, they said due to my engine being reverse rotation, if my old distributor gear is 530 thousands, they have a unit i can use with my old gear.
other sources tell me the internals are different due to the advance, and possibly oiling grooves of the shaft because the distributor also is oposite rotation.

my question now is, does a reverse rotation engines distributor turn the same direction as a standard rotation engine? if so i can get this project going alot sooner as a standard rotation dist. is easy to come by and cheap, and i will just swap out my old gear
thanks,
chris

thanks alan,
so is the distributor you are using a ylm554cv or is it a ylu554cv? my understanding is the ylm series is more resistant to power spikes and the option i want to go with. i also tried to order the ylm554dv, but was told 1 month waiting time thru my supplier. please let me know if your old gear works, and i will go the same way if it does.
chris

Hey Chris: You up North or down here? How about giving me a cell call?

john

jbear,
i am in so california, give me your number and i will call

kelpomatic wrote: jbear, i am in so california, give me your number and i will call

UUUUUUUMMMMMMMMM SSSSOOOORRRRRY newbie,


John's trying to get a hold of me about weather or not I'm going to make the Orlando reunion.

oops,my name is chris too,

GottaSki wrote: http://marineengineparts.com/shopsite_sc/store/html/product3452.html

That's the right one Tom but too rich for my blood. $255 for LH from Summit, good deal if the gear interchanges like it's supposed to. We'll see how that work's out. Skidim has the same one for about the same money with the CCFAN discount.

kelpomatic wrote: fyi, i pulled the gear off the old dist. today, it was pressed on pretty good, not something i would want to do at a campground,

did you remove the roll pin first or just shear it off because you didn't know any better?

Allen take a small straight punch and drive out the roll/spring pin just enough to clear the shaft but not all of the way out, much easier to re-assemble if it's not completely driven out of the gear. But once the poll pin is driven back the gear will slide right off pretty easily as they are designed with a slip fit and not a press fit.

Also there should be a small pimple somewhere on the gear this should line up with the tip of the rotor. Shouldn't be any issues doing it at the lake.

79nautique wrote: kelpomatic wrote: fyi, i pulled the gear off the old dist. today, it was pressed on pretty good, not something i would want to do at a campground, did you remove the roll pin first or just shear it off because you didn't know any better? Allen take a small straight punch and drive out the roll/spring pin just enough to clear the shaft but not all of the way out, much easier to re-assemble if it's not completely driven out of the gear. But once the poll pin is driven back the gear will slide right off pretty easily as they are designed with a slip fit and not a press fit. Also there should be a small pimple somewhere on the gear this should line up with the tip of the rotor. Shouldn't be any issues doing it at the lake.

Actually did it last night Chris. Roll pin out with a punch and I did use a small gear puller to get the gear off. Only thing different is you need to drill out the roll pin hole in the gear as the hole in the Mallory dist shaft is larger. The Mallory tech told me I would have to do this. It did go back together pretty easy but I noticed the hex drive on the bottom of the shaft lines up differently than the stock so I had to mess with the oil pump shaft alignment to get it to drop back in.

the YLU unit has a optical trigger, the YLM and HEI have magnetic triggers. What's faster, light or a magnetic field? which is more stable, which has a more consistant trigger pattern (firing of the spark plugs)

the mallory promasters series coil has a higher output than the DUI unit as well.


and for all you that want to say well if there's water on the lens or moister in the cap then the optical system fails or doesn't fire, well that's just not the case, besides if you have that much moister in the cap then you have other issues all together.

three wire pos, neg to the coil and a ground to the block. The DUI site list the coil as 50Kv unit vs 55Kv for the Mallory promasters series coils.

TRBenj wrote: 79nautique wrote: The DUI site list the coil as 50Kv unit vs 55Kv for the Mallory promasters series coils. So the Mallory has a hotter spark- what about duration? Thats what PerformanceDistributors is citing for their .055" recommended plug gap. Whats the recommended gap on the Mallory?

Timmy Timmy Timmy you really bought that line of BS, the only way to increase the duration is to use a wide rotor segment, you are able to open up the gap because of the high Kv rating of the coil not because of the module. Besides the only reason to open up the gap is fuel milage not performance.

79,
since i am a pin shearing dips*&^, and you obviously know your stuff, can you help me?
i just locally found and ordered the ylu distributor, do i need some kind of recurve kit, and if so what is involved in recurving?
and what promaster coil i should go with? i was on the summit site and got overwhelmed with options.
i do agree though, thruout this project, summit has shipped the quickest