oil pump shaft problems
 

:poke: Hey guy's can anybody tell me if the make a oil pump driveshaft
3/16 at one end 1/4 at the other?
ive built my motor ,everything new,even went 11;5.1 compression new rods bearings,steel crank piston's keith black pistons,anyhow,went to start it,tryed primming the oil pump,turns out the new melling oil pump use's a 3/16 shaft,the new ford racing shaft is 1/4,,question is does anybody know if they make a stepped down shaft for,one end 1/4 and other 3/16?
If not ive got to pull this motor out again and change the oil pump.
After spending 3 monts to fill and finnish and paint everything in the engine
bay it would suck to pull it out again,any info would help
Thanks fellow mustanger's!!

You either got a pump for a carb'd car and your car is injected or vice-versa, I'm pretty sure they have different shaft diameters. this should help.


http://search.netscape.com/ns/boomfr...ilpumps.com%2F
^Here's the site.

http://www.precisionoilpumps.com/ima...et%20Drive.jpg
^Here's the pic, doesn't say the sizes but looks different sizes end to end, good luck with it.

Think you must have a pump for a 351 in there you are going to have to pull it out again. thought the guru would know this :poke:

Trying to take my title? :cop:

no but that differance is day one stuff

My mistake, the parts suppliers I use give me THE RIGHT PARTS so I don't have these problems. Nor am I (or claim to be) an engine builder. :tounge:

Oil Pump Shaft
 

Well,having built alot of engines,this is the first time i come across it,
As far as my parts guy goes,he,s at ford racing,so maybe melling just boxed it wrong,, :poke:

^I wasn't trying to say your parts guy sucks, that post was in response to Captain Spalding who didn't offer any advice on how to solve the problem, but did point out that he knew more than me..........................wait, if you've bulit alot of engines, did you also miss the 1st day? B/c "that difference is day one stuff" :biggrin:

I did give advice on how to fix his problem. pull the mill and fix it right!
Maybe you would like to weld a 302 and a 351 shaft together for him :4:

the difference is not injected or carbed it is 302 to 351. guru

So your solution is for him to pull the engine out? If you read his post, that's the exact thing he's trying to avoid doing!, very helpful :tup . I have seen different sized drives and was unsure of what they were from, like I said, I am not an engine builder.........oh, and I must've missed the first day of "guru" training where they covered that...........apparently you were there though :bow: . At least I pointed him into a USEFUL direction instead of ignoring his entire post and telling him he's SOL :bullshit:. Captain.

Oil Pump Shaft
 

LOL thanks for the advice,seems my parts guy isent back till tomorow,look's like il be pulling it out again,,very gently i hope!
Il try and get some pics up so you can see why i dont want to do that unless i real realy hafto.
but after a year and a half build,i guess another week wont kill me,,
but i was SO CLOSE!!AARRGGG,, :pissed:

[QUOTE=Ponyryd. I have seen different sized drives and was unsure of what they were from, like I said, I am not an engine builder........ At least I pointed him into a USEFUL direction instead of ignoring his entire post and telling him he's SOL :bullshit:. Captain.[/QUOTE]


No harm no fowl just dont know how you would become a self proclaimed tech guru without knowing thease thing's

Who says I'm a self-proclaimed tech guru? I was nominated on the site and believe it or not, I've helped many members here. If you have a problem with my award, or think I don't deserve it, take it up with the site/admin. (white_snake)

Do it right as C.S has mentioned as it isn't that big of a deal to fix. Hell sell the car and buy one with the right pump & drive is another fix...

Alot of engines and you've never heard of this?

Gurus giving engine advice should build a few first shouldn't they?

update on shaft problem!!
 

Well looks like mellings put the wrong pump in the wrong box,you would think that a company that big would make sure,but i guess not,,and beside's there is no difference on the outside,unless you look rite into the shaft you would miss it,thats what i get for depending on the manufactor. :poke:
So it looks like im pulling it out on sat mornig,,wish me luck,,hopefully nothing will get scratched,,il send some pics this weekend,see yah's

reply to 82306
 

Hey 82306!
I guess you dident read what i said about me spending 3 monts on filling and finnishing in try-coat paint in the engine bay!
Thats why its a big deal.ive been waiting 20 years to build this thing,after building other ones for everybody else,after loosing my shop,my house and marriage,and the onlything ive been able to hold onto is this car,so YES it is BIG DEAL to me.plus the fact that ive be doing it in a driveway,so next time you got something smart to say,keep it to yourself
,,,and yeah,i am a liitle touchy about it!

If making the point to do it right is being 'smart' then I guess I am guilty. If you have waited this long so far (as you pointed out) then the small amount of time it will take finishing it off properly is more then worthwhile.

It happens thats why you check everything before installing it. Never take anything for granted - thats right from the smallest part to the most expensive. The Mellings box will have a number on it '#68' for 302 or '#83' for a 351 & a 'HV' for high volume if the pump is so. As well the same number is cast into the body of the pump.

I cannot tell from your posts/thread you've been unfortunate and have had these misfurtunes recently so please don't hold that against me. I was addressing the fact you built 'many engines' and had never seen this before & you were searching for a shortcut to fix the problem.

I am truly sorry to hear about your bad luck hopefully when the car is done it will change for you.

Good luck.

Sorry about that,just not having a good day,funny thing car isent even in my name yet,so my ex wife doesent get her hands on it,lol,
but thanks for the consern.peace!

i dont understand why you wounld need to pull the motor anyway. Ive changed pump and drive in an 89 GT before. Just raise the motor and drop the pan. Dont pull the pan out. Work around it. There is enought room. This way you wont have to pull the tranny and all the wiring and fitings. Just maybe the fan shroud and of course the engine mounts

update on oil pump problem
 

:thumb1: Well boy's i pulled the mototr this mornig at 11;00 am
changed the pump,and drive,cranked it over,had 30 psi at crank,plug in the coil and BOOM!!! she LIVES!!! :bbounce: man! souwnded awsume,ran it for 15 min,,check everything,back her out of the driveway,dumped the clutch and
off i went sideways for about 150 feet!!,i know i know,break it in first!
the thing is nuts! cant wait to set it up,,this took one and a year and a haft years,and it was worth it!!

Good job, glad to here you did it right - now go out and enjoy it till the snow flies!

good to hear!
i would have done teh same thing with smoke flying! :thumb1:

update!
 

Hey guys and gals,took it for a spin again,,this thing is damm fast,cant wait to licence it,put in my cooling fan,hung the exaust rite,relocated the batt cable from the firewall,now its in the lf fender,cant see it,starting to hidd everthing in the engine compartement,looks cool,runs realy good,if anybody wants to see pics,they are in the pic section under project pumpkin,,,,and you will all see why i dident want to pull the motor out again,,seeyah!