Compression release question

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Feb 15, 2015 | 07:01 PM

kidsid99

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From: Memphis

Compression release question

If I put a set of 103 heads off of a 2015 motor that are already drilled for compression releases on a motor that is not set up for compression releases, what are my options? The 2015 heads are drilled for compression releases underneath the rocker boxes. Do I have to put either manual or electric set on there that looks like dealer get over $300 for?

Thanks in advance for any answers to my question.

Feb 15, 2015 | 07:11 PM

jetmech74

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From: Emory,TX

cant put a manual set there, you'll need to buy the Harley ACR kit (or similar) or plug the holes

Feb 15, 2015 | 07:34 PM

qtrracer

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From: SoCal

As stated before you can plug the holes. However if you buy the hd acr releases @40 each and 1 hd wiring harness@50 thats not quite 300 now is it. I'd put em in.

Feb 15, 2015 | 08:06 PM

smitty901

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Put the compression releases in you be glade you did

Feb 15, 2015 | 08:08 PM

kidsid99

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Joined: May 2014

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From: Memphis

Quote:

Originally Posted by qtrracer

As stated before you can plug the holes. However if you buy the hd acr releases @40 each and 1 hd wiring harness@50 thats not quite 300 now is it. I'd put em in.

Ok I see them now. Earlier was looking in Fat Book and they are much more expensive. Thanks for reply. Putting 103 cylinders and heads off a 2015 on my 2009 96ci to go with my cam.

Feb 16, 2015 | 06:40 AM

prodrag1320

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From: deland,florida

if you use the ACR`s,you can just wire them to your starter,no need for the harness (or they can be plugged and have the heads machined for MCR`s)

Feb 17, 2015 | 06:11 AM

grbrown

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Joined: Jun 2007

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From: Bedford UK

Given the choice I would go for ACRs! Just press and go. I've been using them for several years now and cannot see the point of messing with manual ones.

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Feb 17, 2015 | 12:09 PM

qtrracer

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Joined: Jan 2008

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From: SoCal

Put mine in 2009 never missed a beat. I did however vent crankcase to atmosphere

Feb 17, 2015 | 01:08 PM

#10

djl

HDF Community Team

Joined: Jun 2006

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From: san antonio

Quote:

Originally Posted by prodrag1320

no need for the harness (or they can be plugged and have the heads machined for MCR`s)

That's what I did; plugged the ACRs and installed MCRs. I don't like adding electrical **** that can fail anywhere, anytime and my carbureted all bore 107 really doesn't like to start under full compression; it does all sorts of nasty things and will pull a battery down in no time at all.