http://www.chris-craft-parts.com/ Robert Henkel is the man in my book sells original parts at extremely reasonable prices Dan is one of the best but Robert is the best in my opinion!
Hi: I was not aware these were hard to get. I can supply you new carter fuel pumps for $230.00 us new if you are in a pinch. Retail should be $262.82. Honestly, I do not specialize in sales to the public, but would not want to let a fellow cc owner down. However, shipping from detroit may eat up any savings (if there is any!) You prob have the same, but I do have used (4 avail) 427 fuel pumps. if your interested I can check on availability and price for re-build kit. Dean 519-734-7931
Roy had a good comment on another similar line of thought, and I'll repeat it here on this thread. "Beware of using any high performance or racing parts on the marine motors, especially fuel pumps or oil pumps". The stock pumps work just fine, high performance fuel pumps may overpressurize the carb, and ABSOLUTELY do NOT use a Carter (or any other brand) automotive fuel pump on a boat. Marine pumps have a big difference, and the difference can save you and all your friends and family from turning into toast !
I've installed these on both of my 427's. Bad gas in the tanks means I haven't gone further than my 5 gallon jug will take me. They work fine. Guage rating is 5-7 psi at the carb. That is within the spec. for my edelbrock marine carbs.
To my knowledge, the "M" in this number stands for "mechanical". I do not believe there is anything "marine" about it, so proceed carefully. I would recommend calling Dan Cook for the marine product, unless you can find them elsewhere with the proper "USCG" designation, etc.
I purchased a pair of marine pumps from him a while back, and I can not remember if they have the relief ports to be plumbed back to the carb or not, because I have not installed them. They were purchased as spares at the time.
I do know the marine pumps I installed a few years back on a pair of 327F motors had the releif ports, and I went through the routine of running a sipll over hose from the fuel pump back to the carb.
If the m6905 is a street pump, as I suspect it is, it may not be built to the stringent safety standards required for marine pumps. It would be worth a call to Carter to verify this, for sure!
The "M" in this number stands for "mechanical". I do not believe there is anything "marine" about it, so proceed carefully. I would recommend calling Dan Cook for the marine product, unless you can find them elsewhere with the proper "USCG" designation, etc.
Gas in the oil is one of the failure modes of a fuel pump, yes indeed. The relief hose from pump to garb is intended to keep fuel out of the bilge, because when old marine pumps fail (those without the secondary routing) or when automotive pumps fail, they can (also) spill raw gas into the bilge and that is the main issue.
I had some old marine fuel pumps fail a few years ago, and thankfully my sniffer (my nose) picked up a strong gas smell. I opened the hatch and was horrified to smell strong fuel fumes. It was at night. We were waaay out too. I shut everything down except the blower, got down inside with a flashlight, and put my hand down on the fuel pump. It came up wet with gas!
Thankfully the story had a happy ending, but it could have gone very bad. Therefore I recommend going through a marine outlet and paying more for the fuel pump, and getting one that is a certified marine replacement, rather than getting one that will fit the motor and work at a lower cost without the marine safety features.
People like Dan Cook, chriscraftparts.com, marysville marine, etc., can get the real deal, and you can expect to pay a lot more for them too.
The correct fuel pump is...m6905. I just installed 2 last summer. To ad to the lower commentary, Paul is without question giving good advice. I would never consider a auto fuel pump on a marine app. I too have had a bad day when the pump went bad and opened the hatch and almost had a heart attack! A marine fuel pump (carter application) has the hole to hook up a hose to the carb. The hose and barb are sold in a kit for about 5 bucks (at least in my case). In any event no mater what kind of cost you incur, the correct marine carb made by carter for the 427 is the "m6905". Yes, they are expensive! But the risks of auto pumps are huge. To go a step further. if your going to risk the fuel pump, would you replace the the worn out alternator with an auto alt thats not ignition protected for 1/2 the price? if so....youre asking to blow up, expecially if the pump dumps in the bilge! Dean Beliveau.
You're right about the oil lines. On some models of the marine 427 the oil lines loop right up in the way and the oil filter is on top of the port side of the motor, on other models it is located farther aft.
In any case, changing a fuel pump on a 427 is a bugger of a job. I just looked at one of my spares sitting in the shop, and I don't know how much room you have on the forward side of your motor, but on my 38 there is precious little room. You may actually be able to shore up the motor and remove or rotate the forward port side motor mount out of the way, and gain access to the pump there. In any case, under the best of situations, this is still going to be a tough job. I'm not a big fan of electric fuel pumps, but I think you can see why some people have decided to convert to them. I have a set of new fuel pumps, but have not had occasion to install them yet, and if luck holds out, perhaps I never will.
If ("if") removal of the front motor mount (and perhaps the front motor mount assembly too, which also holds the final fuel filter gives you enough room to get an extended socket into the two securing bolts, it will still be a tight fit. I would be tempted to try that route because removing the exhaust manifold is STILL no assurance you'll have any better access. Take a close look at your particular installation, hopefully you have a lot more room in your 42 than I have in my 38.
The photos above show the potential access route if you can secure the motor, jack it up a bit and remove or rotate the motor mount out of the way. Since I have not done this job personally, I'll defer to those who have. Having recently reinstalled a transmission oil cooler with similar hard copper connections, those will also be a bugger to get back aligned and threads properly started.
Good luck, hope this gives you a viable alternative and prompts some addl comments.
Just spent last weekend replacing the raw water pump impellers. A nasty enough job, but the fuel pumps really have me stymied.
Liked your suggesting of jacking the motor up and removing the front engine mount. Will try that, but before I do, I will have to order some rebuild kits so that I can rebuild my spare fuel pump and replace each one directly as I remove the pump.
I had some serious problems trying to locate either new fuel pumps or rebuild kits. Thanks to the chriscraftcommander.com website, I have found the thread on fuel pumps and now have the confidence to go ahead and order the right parts.
Thanks again for your assistance. I will photograph the effort and post for other CC owners.
It may be perfectly viable to rebuild, but I would personally rather replace the pump rather than rebuild it, for the sake of erring on the side of safety.
Getting the replacement pump is one thing, installing it is something totally different. Take a look at what we have to work with on a 427. There is just about NO way to do this while the motor is sitting in the boat. These photos were taken off my spare 427s sitting in the shop, so please excuse the dust!
You big wussy it doesn't ;ook that hard at least from my end of the project as in I don't have 427's come on buck up and do it. After all the posts about abcs specs and such you should have no problems replacing one of these pumps.
HE He He He
No, I'm not a wussy at all. Just a realist, and I realize I'll have to give a little blood to do this job, either from a knuckle or maybe from the top of my head, because I'll be standing on my head to do this job. A football helmet won't work, because there's not enough room in the front of a 38 engine compartment, lol. The one on the Starboard side may not be too bad, but God help us all with the one on the Port side. It's just tough to work in the fetal position, you can't get much leverage on a wrench, ha ha.
I have been lurking on this particular thread for awhile. I hope everyone had a nice holiday. I now have the heads off on my port 427 and I think after 34+ years I should change out the fuel pump. So I removed it yesterday. Especially with the introduction of the Ethenol where I here it can break down old rubber(diaphram) So, what was the conclusion on the Carter M6905? How did they work Dean? And is it true they come with a threaded port for the overflow tube in order to become marine compliant?
Any update would be appreciated.
George
Bonaventure Rye,NY
