Alright im chasing my tail over here. Boats back together fires and idles with the new tunnel ram its really responsive  good oil pressure but when i rev it, it breaks up really bad around 4000-4500 like its bouncin off a rev limiter. If u rev it slow and easy itll rev past that but a good half throttle rev it breaks up and freaks the tach and the oil pressure gauge out. I had a new module put in the brand new distributor, swapped the coil, unhooked the tach. Still same shit... any idea's??

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Disconnect the alternator, use a jumper wire from the positive battery post to the ignition coil, ensure you have at least 12 volts going to the ignition circuit.

GT

Ya timing marks are good when i set total. 36 @ 3000 rpm. it has a 105 amp one wire alternator.. same setup as last season. Except the tunnel ram and distributor. Fuels been in it since october, whats screwin with my head is why when it breaks up does it make the tack and oil pressure go crazy..i understand the tach but not the oil pressure gauge..im wonderin now cuz i repainted the engine if it could be my block ground..oh ya and its a procrap distributor..i already had them put a new pickup in it today to be safe..but same result..

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It's starting to feel like a loose connection somewhere.

The ground is definitely a possibility.

Start bypassing worth jumpers and take the belt off the alternator.

Seems silly but possible.

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Do you have a  mechanical way to monitor fuel pressure while all this is happening?


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Do you have a  mechanical way to monitor fuel pressure while all this is happening?


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has a mechanical gauge right in the y block that splits to both carbs. Stays pretty steady at 6.5 psi. I havent watched it when it breaks up tho. Ill check that tomorrow as well

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I know everyone wants to lean towards fuel and normally id be right there with u guys..but its the oil pressure gauge that keeps me lookin electrical.. its not bouncin alil cuz the engine is studderin. The engine has 50 psi oil at idle and up to 75 in the upper rpm range. All the gauges are electric. When it breaks up the oil gauge starts bouncin from 0 to 75 like its bein grounded out.the tach same thing its not just bouncin at 4500 like its on a 2 step, its all over place..

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I know everyone wants to lean towards fuel and normally id be right there with u guys..but its the oil pressure gauge that keeps me lookin electrical.. its not bouncin alil cuz the engine is studderin. The engine has 50 psi oil at idle and up to 75 in the upper rpm range. All the gauges are electric. When it breaks up the oil gauge starts bouncin from 0 to 75 like its bein grounded out.the tach same thing its not just bouncin at 4500 like its on a 2 step, its all over place..

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Have you checked all the connections on the ingnition switch/key? Had a similar problem on a buddys boat ended up being a loose connection on the switch


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Nice find.  Yeah I had a buddy that ran one and didn't really have any good luck with it.


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Wow. I had a pro comp HEI in my old boat and had no issues.but lately I've Ben hearing many negative  stories regarding pro comp. I think I'm done considering purchasing any of their products. Time t O get rid of fuel pump before I have any issues.

Ya i wont be cutting that corner again.. pounded my head against the wall for a week over their bullshit product that i took to them they " tested" it and told me it was fine...

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Lol..i really really hope they refund my money tomorrow, id hate to have to give it back to them thru their showroom window!!!

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Lmfao..  good stuff

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So i never updated.. when i walked into the procomp show room with my dist box and receipt in hand the lil lady in the front cubical looked at me and said "doesnt work" i replied politely no!! She shook her head and set back down! Guess it happens alot over there. Got full refund... pretty sure that says alot for procomp...

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Not going to get on the soap box.

But why in the ever loving hell you anyone rep that crap? I would not have even offered to sell that garbage in my shop when I had it.

I guess people will do anything to make a quick buck...

Here is my thinking (then I will hop down off the box).

I am the shop owner... I order the material for stock, keep it in inventory, pay the inventory taxes on it, pay someone to sell it and/or fill the order, take the money, deposit in my bank account, print receipt... Then when it comes back, pay someone to perform the return, box the bitch back up, pay someone to ship it back to the distributor. It cost me money to sell a counterfeit, third world complete piece of shit.....  How is that even sustainable?

Am I the only one that sees it that way?

Glad you got your cash back.

GT