Relay board

A forum for discussing the assembly, testing, and installation of the relay board.
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zazza
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Relay board

Post by zazza »

Hey there,
just a quick ques, when MS'ing an already efi engine, can you use an MS relay board and eliminate the stock relays ?

Thanks Neil
kjones6039
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Re: Relay board

Post by kjones6039 »

Sure...... for the most part, unless you have some esoteric relays that need to be maintained.

I would recommend the relay board under any circumstances! I will take care of you fuel pump, fast idle relay etc. and makes connecting injectors, sensors, ignition control, et. al. MUCH easier! And, it also provides all the necessary fusing, all located in one convenient package.

WELL worth the $$$ IMHO.

Ken
1979 Corvette - 383 CID SBC w/ Holley Pro-Jection 900 CFM TBI, 4-85 lb lo-z injectors & Walbro 255 pump
MS2 v3 w/ms2extra 3.4.0 Release
36-1, Delphi LS2/7 coils in wasted spark, driven by v2.0 logic board from JBPerformance
Spartan Lambda Sensor from 14point7
zazza
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Re: Relay board

Post by zazza »

hmmm.. esoteric ?? lol
kjones6039
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Re: Relay board

Post by kjones6039 »

Intended for or understood by only a particular group
Of or relating to that which is known by a restricted number of people.
Confined to a small group: esoteric interests
Not publicly disclosed; confidential

Synonym = mysterious
1979 Corvette - 383 CID SBC w/ Holley Pro-Jection 900 CFM TBI, 4-85 lb lo-z injectors & Walbro 255 pump
MS2 v3 w/ms2extra 3.4.0 Release
36-1, Delphi LS2/7 coils in wasted spark, driven by v2.0 logic board from JBPerformance
Spartan Lambda Sensor from 14point7
Matt Cramer
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Joined: Sat Jul 03, 2004 11:35 am

Re: Relay board

Post by Matt Cramer »

Some relays you may need to keep would include things like fan relays, defrost relay, and non-engine-related relays.
zazza
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Re: Relay board

Post by zazza »

Thanks matt :)
kjones6039
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Re: Relay board

Post by kjones6039 »

My apologies to zazza for my rather terse reply and thanks to Matt for his excellent explanation. It's just been one of those weeks. I'm getting less sleep than Matt, I think.

Ken
1979 Corvette - 383 CID SBC w/ Holley Pro-Jection 900 CFM TBI, 4-85 lb lo-z injectors & Walbro 255 pump
MS2 v3 w/ms2extra 3.4.0 Release
36-1, Delphi LS2/7 coils in wasted spark, driven by v2.0 logic board from JBPerformance
Spartan Lambda Sensor from 14point7
trakkies
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Location: SW London, UK

Re: Relay board

Post by trakkies »

kjones6039 wrote:Sure...... for the most part, unless you have some esoteric relays that need to be maintained.

I would recommend the relay board under any circumstances! I will take care of you fuel pump, fast idle relay etc. and makes connecting injectors, sensors, ignition control, et. al. MUCH easier! And, it also provides all the necessary fusing, all located in one convenient package.

WELL worth the $$$ IMHO.

Ken
IMHO, it depends on the original harness. I found it easier to modify that for the MS than use the relay board - mine already had main and fuel pump relays. Also ends up with less connections so fewer sources of potential problems. However, I do have a breakout board which goes between MS and loom for fault finding.
Dave P, London UK.
Rover V-8
MSII V3
EDIS
Tech Edge Wideband
kjones6039
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Joined: Sat Jul 22, 2006 7:02 pm
Location: Eureka, Nevada USA
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Re: Relay board

Post by kjones6039 »

Thanks for making that point Dave. I get a little carried away when I go on my rant about things like relay boards, stims etc.

All of my projects for the last 4 years have been on formerly carbureted cars that have no existing harnesses etc.

Be safe,

Ken
1979 Corvette - 383 CID SBC w/ Holley Pro-Jection 900 CFM TBI, 4-85 lb lo-z injectors & Walbro 255 pump
MS2 v3 w/ms2extra 3.4.0 Release
36-1, Delphi LS2/7 coils in wasted spark, driven by v2.0 logic board from JBPerformance
Spartan Lambda Sensor from 14point7
trakkies
Super Squirter
Posts: 1162
Joined: Tue Dec 30, 2008 3:06 am
Location: SW London, UK

Re: Relay board

Post by trakkies »

kjones6039 wrote:Thanks for making that point Dave. I get a little carried away when I go on my rant about things like relay boards, stims etc.

All of my projects for the last 4 years have been on formerly carbureted cars that have no existing harnesses etc.

Be safe,

Ken
IMHO, some who can do the most incredible mechanical work have a mental block when it comes to wiring, and think anything will do. Yet electrical problems are perhaps the most common these days. So whatever produces the best and neatest job is the way to go.
Personally I enjoy making up wiring looms - but then I have all the correct crimp tools etc. But I know some hate it.
Dave P, London UK.
Rover V-8
MSII V3
EDIS
Tech Edge Wideband
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