14mm piston problems???

[wingnuts0nr]

here in lies my delima; talked to a gentleman at i believe Piers Diesel and he made mention that alot of people running the 14mm piston in the VE pumps were having problems and the pump was crapping out??? So does any one have any opinion or knowlege of potintial problems with them??
this is really directed at KTA cause of his experience with the 14mm piston
Could it be a lack of feed fuel causing their problem or was it just 1 or 2 people????

Thanks for the input
James

[KTA]

Some people(3) had repeated failures, some had none (8). I believe the problem to be fuel related, and in some cases heat related. It is my suspicion the stock vane pump in the VE can not support over about 500rwhp. The only 14's that failed were all pushing over 600rwhp, or were maxed out on a test stand. It takes many modifications to the fuel system to keep it together at higher power levels. Thats my story and I am sticking to it. LOL Oh and they are competition parts and as such have no warranty.

[wingnuts0nr]

Well that is what went through my mind as far as failures. I just didn't want to lay out alot of cash and have something that would cost me more.... So by wanting to only reach to the 500 mark that 14mm head with a piston lift pump behind it should work fine for my daily driver/trailer puller.. would you also suggest bigger feed fuel lines? and what other things could i do to ensure longjevity of that pump
Thanks for your input
James

[Rampower]

You've only had the old girl for a couple of months and you are allready hunting down the 500 HP gods LOL. That 14 mm head will get you the 500 you are looking for, but I believe that 500 HP can be had with the 12 mm head with the right set-up. Like KTA said, the 14mm heads that gave out were maxed out for very high HP. There are a number of the 14's running around without problems that are not maxed. We'll talk more about it Sunday. I here you really like the Suncoast parts.

[Rampower]

My post count is going to go through the roof like this.

[GLHS]

I think you'll need something better than a piston lift pump. Mine would not keep up at all with a 12mm rotor head. I have installed an Air Dog system and so far so good. Rock solid 15 psi at any rpm and load. You can get by just as well for less with a good electric pump.

[KTA]

Anything you do to improve fuel flow is going to help. Bigger lines, bigger pickup in the tank, better fuel filter, and the liast goes on.

[wingnuts0nr]

Hey guys i really appriciate all the input, I'm learning so much from these sites and like most everybody here I get a little HP then I want just a little bit more ... Well when i get the swap ready to my chevy dually i will work on bigger fuel lines and look for a better lift pump. I sold my landcruisers so now i have a little "PLAY" money maybe a turbo big injectors More fuel for the truck
Thanks again
Barney

[wingnuts0nr]

You've only had the old girl for a couple of months and you are allready hunting down the 500 HP gods LOL. That 14 mm head will get you the 500 you are looking for, but I believe that 500 HP can be had with the 12 mm head with the right set-up. Like KTA said, the 14mm heads that gave out were maxed out for very high HP. There are a number of the 14's running around without problems that are not maxed. We'll talk more about it Sunday. I here you really like the Suncoast parts.

and yea only a couple months to get the bug and yea so far the suncoast parts seem to be working great, just need to check the band and make sure they are adjusted right but all in all running great!

[PToombs]

My post count is going to go through the roof like this.

I think you've got a little ways to go!