GT40 Fuel injectors

http://www.correctcraftfan.com/forum/forum_posts.asp?TID=18454&title=pcm-proboss-gt40-58l-what-sized-fuel-injectors

Well, Sport 1999's link had the Ford part number just as clear as day in a picture from Joe in NY by way of TRB and they're 24#/hr.

SkiDim's price is probably what floored Joe

And that link please Ken?

For you Gary

It's earlier in this same thread

sport1999 wrote: http://www.correctcraftfan.com/forum/forum_posts.asp?TID=18454&title=pcm-proboss-gt40-58l-what-sized-fuel-injectors

Joe

The parts manual in the link may come in handy for you if you're looking for original PCM part numbers and info.

For example your injectors are on page F4-1 part number 47 and the accompanying figure and the description says they're 24#/hr

It covers 1975 to 2001 model years Ford and Chevy. Revised in 2000, I guess to go up to the 2001 model year.

PCM illustrated parts manual

I would check on the Mustang automobile forum for injector information. Those guys have been performance modding this injection system for a long time. I am sure they have sources for injectors and recommendations for the flow needed. These engines work hard like a truck but don't see RPM over 5,300 so no need to go crazy unless you are upping the power.

MrMcD wrote: I would check on the Mustang automobile forum for injector information. Those guys have been performance modding this injection system for a long time. I am sure they have sources for injectors and recommendations for the flow needed. These engines work hard like a truck but don't see RPM over 5,300 so no need to go crazy unless you are upping the power.

It seems like PCM/Ford must have had a reason for 24#/hr injectors in a system/engine that runs very well with them.

Joe's trying to get to stock specifications on his Frankenstein engine that some not so upstanding type sold to him as a GT 40

The stock flow rate is just fine.for that

Well, might just go another way than new anyway. Spoke with a fellow lake friend that had his injectors rebuilt here in town a couple years ago and said it was half the cost of new. His was a GM platform, but those injectors new were half the cost of these gt40's already. The only thing I'm worried about is as Ken said, the Frankentsein engine that was in it before. Who knows if the injectors I have are even the correct ones for the original GT40 platform. I pulled the injectors from the rail this morning and was able to clean one of them off enough to get a couple of part #s, googled them and came up with a few links but none of them specifically pointed to the marine GT40 as the correct part. Can anyone confirm the 2 part numbers on the stock PCM injectors?   What I have is 280-150-947 and F1TE-D5A.

gt40KS wrote:     What I have is 280-150-947 and F1TE-D5A.

That is what would have been on a 95 gt40 for sure, pcm marine, yadda yadda none of it was anything other than ford industrial. These things used to be cheap on ebay new aftermarket like 179 for set of 8 - but I guess there are newer connectors or something and the old ones are less available if I am reading things right - but any 24lb injector that's a replacement for fords that has that style connector is going to work for you just fine.

Good thread Ken, don't know why I didn't see that link earlier, just like I don't know why my search engine skills don't seem to work on this site Anyway, thanks to everyone for all the help.

I did call the local shop and spoke with the guy about the injectors. Lots of information from him as well - awesome knowledgeable guy and knew right away what I was talking about.    Now that I know they are in fact the correct ones, I'm going to take them to him to be rebuilt.   

Dropped the injectors by the rebuild shop and had a nice conversation with the guy. As soon as he saw them he asked how they were running and if I had any cold start issues or hot start issues after it sits for a while.
'Cold starts, yes' , I said - 'It seems to have this loping or idle fluctuation for a few minutes on a cold start, and the hot starts seem to take a few cranks if it's set for a bit, but no loping at that point. Why do you ask?'    
That's when he told me that this specific injector type - multiple part #s, multiple applications - has a bad history with developing leaks over time, especially when they sit unused for long periods of time, like when you put a boat away for the winter. He said light cases only drip a few drops after shutting down and it will take a few cranks sometimes to get it started. Worse cases will actually load the cylinders and can make it very hard to start. Either condition can also cause several other issues with idle, fuel consumption, etc. as well. Once the erosion has started, there isn't a fix other than getting new injectors. Well ....
He said if they test bad and I don't want to go through with the rebuild, there will be no charge, so I told him to proceed in cleaning and testing them and let me know.

MrMcD wrote: He did say if we are jumping up from the 310 HP factory engine to maybe 400 HP the injectors should handle the flow but the most common tweak on these older Fords is the increase in Fuel Pressure which allows the factory injector to provide the increase need in Fuel. .... I don't know if it would be worth it but I like playing with engines, conservatively.

Not looking at that large of a bump this time around. My new engine specs in the 340-350 range. Shop has about a 5-6 week backlog so I won't be bolting on all the new and refurbished parts for a while. Hard not to get excited though

I've been a gearhead since my early teens - back in the dark ages, so says my Son   
But I know what you mean - can't seem to leave anything alone and my wife just rolls her eyes. At least I don't go crazy like some of my friends. Yeah, conservative.

Ok, well except for my last boat ....