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Technical => Spud Miller's Cave => Topic started by: ss4 on July 04, 2016, 11:19:50 AM

Title: ETC Rev Limiter Help needed!!
Post by: ss4 on July 04, 2016, 11:19:50 AM

I have had this ETC Rev Limiter for 3 years now and it has yet to work right.  According to Hank it is picking up interference from the mag.  Seems the box could be shielded in some manor but I'm a mechanical eng. not a sparky.

I have Taylor spiral wires and have a separate battery supplying power, fuse box, grounded to the engine block and external coil.  Any help or tricks would be great.  Way too much $$$ into this and not have it work.

Title: Re: ETC Rev Limiter Help needed!!
Post by: Spud Miller on July 04, 2016, 02:45:19 PM

 Sorry to hear that. Have you given this a read?
http://www.fuelinjectionent.com/magsngremlins.php

 Might be something in there that will help. Some folks have no trouble with those devices and others can't make em work at all.

 Spud

Title: Re: ETC Rev Limiter Help needed!!
Post by: ss4 on July 05, 2016, 08:42:58 AM

Thanks for the great info Spud.  I was also told an AM radio may assist in finding the interference, but no consistence to find.   I did see the Vertex coil case is cracked again.  the first is at the coil post and now the second is at the terminals.  Would this increase the issue or can I just epoxy again?  (only a 2 year old coil)

Also what gauge shielded wire should I run from the mag to coil to switch to rev limiter?

Title: Re: ETC Rev Limiter Help needed!!
Post by: Spud Miller on July 12, 2016, 05:59:57 AM

 Sorry for the delay. Just returned from vacation.

 I've never used a radio to find ignition noise frequency. The frequency changes with engine speed so it's a moving target.
 
 The cracked coil won't cause any extra noise. The epoxy doesn't shield EMI or RFI at all. When we get coils like that in the shop, we inject epoxy into the cracks to keep dirt and moisture out to prevent a possible short to ground.

 Normally, I'd recommend 16 ga. wire for such connections. If you're using some kind of multi-conductor shielded cable, then 18 ga. will work fine for your Vertex.

 Spud