SoCal Jet Boats
Tech Talk => Engine Mechanical / Electrical => Topic started by: Brad @ SCJB on February 23, 2017, 07:48:36 AM
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I have a hole in the dash of the crazy eights that is 4.25" in diameter. I had a mechanical tach in it before, but I now have an electronic ignition. Only solution autometer has is for 4 ⅝ hole. Resizing the hole is not an option.
Anyone know of an electronic tach that will fit a 4.25" hole?
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You could turn a bezel/bushing, that could install from either the front or back of the dash; making the hole fit any gauge.
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Just another idea, since it's flat black it wouldn't be too hard to fill the hole and make it smaller so you could run the 3-3/8 or whatever it is and just touch up the paint. I made a template, cut a circle out of wood and glassed it in one a hole in my dash in the TX. I mean if resizing it bigger is the problem. Technically this is still resizing it lol
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You could turn a bezel/bushing, that could install from either the front or back of the dash; making the hole fit any gauge.
That is an option, but I don't have access to the tools to machine out a bezel like that.
Just another idea, since it's flat black it wouldn't be too hard to fill the hole and make it smaller so you could run the 3-3/8 or whatever it is and just touch up the paint. I made a template, cut a circle out of wood and glassed it in one a hole in my dash in the TX. I mean if resizing it bigger is the problem. Technically this is still resizing it lol
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It would be impossible to match the faded flat black color....so I would have to repaint the entire boat......for a gauge. Yeah, not an option.
It seems that 4 5/8 is the common universal hole size for larger gauges. Seems likes Jones is the odd duck making a 4 1/4 gauge. I have found that Classic Instraments makes a gauge for a 4 3/8" hole. I would have to resize the hole slightly bigger. The gauge styles they offer in this size are to 'classy' for the crazy eights......so I will be resizing the hole to 4 5/8" :banghead:
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http://greatlakesskipper.com/faria-boat-multifunction-gauge-gtc034a-tachometer-oil-pressure
Might give them a call and see if they can do a 10k rpm version.
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That is an option, but I don't have access to the tools to machine out a bezel like that.
Got calipers?
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Seems likes Jones is the odd duck making a 4 1/4 gauge.
Still have the Jones?
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Yeah I have calipers and no I sold the Jones with the magnito a long time ago
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http://www.sidebysidesports.com/alrarzrxp10t.html
That's 4.25" pretty damn expensive but it's the size
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http://www.speedhut.com/gauge/GR4.5-TACH-02-DM/1/Tachometer-Gauge-8K-RPM-Shift-light-(Dash-Mount)
Would that work ?
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http://www.sidebysidesports.com/alrarzrxp10t.html
That's 4.25" pretty damn expensive but it's the size
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Not sure how you would get a 2 cylinder signal to work.....
GT
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Not sure how you would get a 2 cylinder signal to work.....
GT
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That's how you get a Ford to turn 10,000 RPM
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That's how you get a Ford to turn 10,000 RPM
Oh snap! Shots fired...Lol
GT
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Oh snap! Shots fired...Lol
GT
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I had to take the cheap shot
Peace, before it escalates
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Hahah I didn't even think about the cylinder count
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That's how you get a Ford to turn 10,000 RPM
Lol. Makes it even more funny coming from nice guy like flusher.
We are used to it from old crotchety Glenn.
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Just some food for thought, the larger you make that hole the weaker it will be. I don't think it would be that hard to blend out a little flat flack and let it fade to match personally if you were to fill it and make it smaller
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Ended up with a Autometer Sport-Comp 5" tach which uses a 4 ⅝" hole. I'll have to enlarge the hole a bit. Wasn't what I wanted to do but it'll work.
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Ended up with a Autometer Sport-Comp 5" tach which uses a 4 ⅝" hole. I'll have to enlarge the hole a bit. Wasn't what I wanted to do but it'll work.
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Do you have a hole saw that size?
GT
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Didn't have a hole saw that size, but I had a barrel sander. Traced the hole from the packaging then slowly worked the hole bigger. Made a huge mess but it's in there.
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Hell ya looks good, nice job.
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