Which lifters for a 7500 rpm motor? by Dean

ok i'm confuse now. what should i use. i know you should use a hydraulic cam but what about the lifters. there are solid, hydraulic, hydraulic roller, solid roller, and probably more that i dont know about. what is good for a 7000 to 7500 rpm motor?

A hydraulic cam can be used for that rpm but should generally be limited to about 6500rpm.
A solid lifter cam would be best for the intended rpm range that you indicate.
Roller lifter aftermarket cams have a lot of failures. They don't get enough oiling for some reason and the require a lot more spring pressure.
If you get 5000miles out of them that is a lot.
Solid lifter cams are actually very easy to use. You adjust the valves with the engine off. If you use polylocks they will keep the adjustment for next to forever. They also get full lift at the valve.
Hydraulics do not because they work on oil pressure.

quote:

Originally posted by dean:
...ok i'm confuse now... what is good for a 7000 to 7500 rpm motor?...

Don't be confused. If you sleep on a bed of nails, or if you like to write about the love/hate relationship you have with your car on internet bulletin boards, you'll probably love solid lifters. However, the best thing for a 7500 rpm motor is a second mortgage on your home. Or a winning lottery number.

LOL .........

Your friend on the DTBB

i'm still confuse and i already mortgage my business. how do i built a 8000rpm engine? lol

quote:

Originally posted by dean:
i'm still confuse and i already mortgage my business. how do i built a 8000rpm engine? lol

Dean, the best way to get to that kind of RPM level is the new modular motors. In fact you can run right down to the ford dealer, order one, and plug it right in without having to take the heads off. They cost about 14 or so. You have to order them through FRPP.
You want to go a higher RPM than that you will have to start looking at Honda motors.

stick with the cleveland...it will do 8k once, then you'll need to buy the honda.

i'm going to stick with the cleveland since that was what it came with. i'll just have to lower my exspectation on reving the darn thing.
i already got couple of hondas. one in particular is a bike. damn thing will rev to 14 but powerband is between 9 to 13.

You don't adjust the solid lifter with the engine running.
Why don't you guys read the shop manual on the procedure?
This is a Ford, not a Chevy or a lawn mower.

quote:

Originally posted by dean:
i'm going to stick with the cleveland since that was what it came with. i'll just have to lower my exspectation on reving the darn thing.
i already got couple of hondas. one in particular is a bike. damn thing will rev to 14 but powerband is between 9 to 13.

Well a derivitive of the Cleveland does run at 8500 rpm for more than 600 miles at a time. But you can't buy one of those. And you can't make it with off the shelf parts either. SO unless you are a bagillionaire, it is better to lower your expectations. Besides, the Pantera is not a race car. Therefore it does not need a race engine.

Personally, I think you should lower your expectians. You can build a tourquy motor that does not go to 8G. The power will start falling off over 6-65 anyway. I keep bringing up my drag race motor...but we shift at 6600 and finish @ 6200. We tweeked the trans to shift at 7500 but we picked up no speed or quicker ET. Just caused some smoke to come out.

Yeah but I can understand wanting an engine that will do that for sure. Heck if I could afford it I would have me one of them formula one engines that turn 22,000 rpm. Just cause it sounds so cool. But like George said, a really big stereo system that plays a formula one recording over and over is a hell of a lot cheaper.

Well DeTom, since you can't afford a F1 engine that turns 22,000 rpm, how about a some F1 scenery that will make your heart rev past red line?

Just curious... What kind of maintenance and life expectancy do you get with hydraulic rollers? i.e. On a street motor with occasionaly high speed blasts to keep up with your peers.

My opinion, plain jane hydraulic valve train, 35,000 miles.
HP with high pressure springs, etc, 10,000 miles or less.

quote:

Originally posted by george pence:
Well DeTom, since you can't afford a F1 engine that turns 22,000 rpm, how about a some F1 scenery that will make your heart rev past red line?

That's what I luv about the Pantera George. You sit so low that you see things others miss.

Hey DT, is that 22,000rpm US or Canadian?

Good old italian I guess.

FWIW - I have a solid lifter cam and like it a lot.

Maintenance really isn't bad, it holds the lash pretty well but I check it once a year anyway.

My engine is still pulling pretty darn hard when the rev limited kicks in at 6500 rpm. I'm happy with the limit - this engine cost me blood, sweat, tears, and a whole lot of suffering. I want it to last a little while.

Solid lifters make a cool noise too ;-)