SIerra 18-5002 or 18-5006 are they identical

[crosbyman]

seen good price differences on the two kits (points/condensers)

what is the difference would they both work on 9.5hp 9r71 or 9122r ?? and lower hp oldies

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[frankr]

Different condensers. 5006 has the correct condenser (580321) for your motor. 5002 has 581419 condenser (higher capacity). There is much confusion concerning the subject, and I have to admit even I am getting confused.

[joecb]

I’ll try and shed some light on this … info from a data sheet that I believe Frank put together some time ago…
Evinrude capacitors…

.1 mf – 170067, 17905, 171078, 171448, 171449
.2 mf – 171331, 171471, 201484, 201753 (long wire) ,, 300153, 510173

.3 mf – 170002, 171470, 580321

.4 mf – 580256 ( for the v-4)

Generally speaking, all the 1950’s vintage motors will be happy using the .2 mf caps

I could not find the 581419 cap listed, do not know the “size” for that one… anybody know?

Joe B

[frankr]

581419 is for the Lo-Tension Magneto. Capacity is 0.25-0.29 mfd. There is another number out there that I had in mind.

[frankr]

The other number I had in mind was 580422, used in various 33-40hp motors of the 1960-1970 era, replaced by 581419. Still confused.

[frankr]

From 1976 Evinrude where-used

[crosbyman]

I guess my question really meant …..will the 18-5002 work just as well as the 5006 kit …with the extra capacitance . looks like the points themselves are identical … the variable being the condensers …

wouldn’t the extra capacitance in the 5002 set help even further to protect the point contacts ?

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[joecb]

OK, here comes my $0.02 worth or advice on capacitors…… If you look thru all the various listings for cap applications the vast majority fall in the .2 to .3 mf range. Now as for variability, some of the best modern condensers (caps) have a tolerance of +/- 5% , most commercial caps are +/- 10% . Now I ‘m guessing that the vintage wax-paper caps that we have in our motors are lucky to be not that good, likely more like +/- 20% of nominal range. So, bottom line take any good cap in the common .22 mf size and your motor will be happy.

Joe B

[frankr]

I agree, you are lucky if the capacity is within +/- 20%. They just aren’t that critical.

[crosbyman]

guys, looking for a yes no response… 🙂

can I use with no ill effects the cheaper 18-5002 kit and its extra capacitance instead of the more expensive 18-5006 in my 9.5 hp

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