Flat Tappet Engine Oil

[72HCODE]

I use royal purple engine break in oil. It states specifically on The bottle designed for flat tappets.

I've been using it for about 6 years now and I'm happy to keep using it.

 

[ramair]

Motorcycle oil still has high zinc levels in it, it is also a higher shear oil. Diesel oils have had the zinc removed from them and are not a high shear oil.

 

[Don65Stang]

Based on what I learned today about engine oil weights I'm going to start using Royal Purple HPS 5w-20 exclusively in my engines!

That Bob is the Oil Guy Motor Oil 101 - Final Exam webpages were an EYE OPENER! I highly recommend you read those pages a few times! It clears up a lot of engine oil myths and fallacies that I used to think were gospel truths.

http://www.bobistheoilguy.com/motor-oil-101/

 

[droptop73]

I'm using 10w-30 Kawasaki 4 cycle motorcycle oil. I get a real good deal on it.

 

[Tnfastbk]

Just go roller and let the worries go away

+1 on that ::thumb::dancebanana

Guys, You may want to click on the link and spend a few minutes with the information. Chuck

http://www.google.com/#hl=en&gs_nf=1&qe=cm9sbGVyIGxp&qesig=GUFOdjFjrVX57qdIV8AU2w&pkc=AFgZ2tlqZ7NkrSY3mLJQ9oY4rYS6ISBHczIdO2GfED7X6ZOwe1uLcKZ4_esOF4P7WHvRJgfkU-MPHGh_3EXo785aBcgRIbe0iQ&cp=9&gs_id=y&xhr=t&q=roller+lifter+failures&pf=p&output=search&sclient=psy-ab&oq=roller+li&gs_l=&pbx=1&bav=on.2,or.r_gc.r_pw.r_qf.&fp=42fb278275950100&biw=1593&bih=978

Did not see any from failure on start up/break in. Most were mismatched apps or racing so will stick by my original statement

 

[c9zx]

+1 on that ::thumb::dancebanana

Guys, You may want to click on the link and spend a few minutes with the information. Chuck

http://www.google.com/#hl=en&gs_nf=1&qe=cm9sbGVyIGxp&qesig=GUFOdjFjrVX57qdIV8AU2w&pkc=AFgZ2tlqZ7NkrSY3mLJQ9oY4rYS6ISBHczIdO2GfED7X6ZOwe1uLcKZ4_esOF4P7WHvRJgfkU-MPHGh_3EXo785aBcgRIbe0iQ&cp=9&gs_id=y&xhr=t&q=roller+lifter+failures&pf=p&output=search&sclient=psy-ab&oq=roller+li&gs_l=&pbx=1&bav=on.2,or.r_gc.r_pw.r_qf.&fp=42fb278275950100&biw=1593&bih=978

Did not see any from failure on start up/break in. Most were mismatched apps or racing so will stick by my original statement

Roy, I was not challenging your statement. I was just pointing out roller cams/lifters are not without issues. Roller cams and lifters are superior to flat tappet cams and lifters. It is just a question of cost, benefit, and necessity for most street/strip motors. From what I've seen and experienced, most premature problems with cams (flat tappet or roller) are due to not enough valve spring pressure, wrong break-in procedure, improper oil, and valve train geometry problems (wrong push rod lengths). I think we may be in violent agreement. Chuck

 

[72HCODE]

funny you mention rollers, when i had my engine rebuilt i told the guy over and over again i wanted to change to rollers from flat tappets, he basically told me it was too much work and not worth it.

how i wish i could go back and punch the guy in the face and take my engine else where.

if you rebuild the motor Push that you want a roller conversion if they can't do it keep shopping around for somebody else.

 

[Jeff73Mach1]

I disagree with the statement that Roller lifters are superior to flat tappet lifters.

Solid lifters are better for upper rpm use as they are lighter-there isn't a single type lifter that is "superior" Rollers use less energy due to friction, but their weight makes higher rpm's more difficult. they are much more expensive and they don't sound near as cool as solid lifters clacking away

 

[c9zx]

I disagree with the statement that Roller lifters are superior to flat tappet lifters.

Solid lifters are better for upper rpm use as they are lighter-there isn't a single type lifter that is "superior" Rollers use less energy due to friction, but their weight makes higher rpm's more difficult. they are much more expensive and they don't sound near as cool as solid lifters clacking away

Each has it's appropriate use and many engine applications can readily use either. A roller has the ability to support more aggressive cam ramps than a flat tappet although a flat tappet can have higher acceleration than a roller at the first part of valve opening. Solid rollers are used for high RPM use (usually with a rev kit) with more radical race profiles. I've used both solid flat tappet and solid roller cams in engines turning 6000-7200. For most street applications I feel a flat tappet set up works just fine but, if the budget is there, a roller set up is very nice. I have a solid flat tappet in the 408C in the Mach 1, Boss 302 Cougar, and a solid roller in the 330W in the Cobra. The 408C is limited to 6500, the Boss 302 limited to 6800, and the 330W is limited to 7200. Hydraulic rollers were/are used by OEMs for many years as well as many cam vendors for street/strip applications. Although all hydraulic lifters will lose some lift compared to a solid flat tappet. So, take your pick.

 

[Tnfastbk]

Guys, You may want to click on the link and spend a few minutes with the information. Chuck

http://www.google.com/#hl=en&gs_nf=1&qe=cm9sbGVyIGxp&qesig=GUFOdjFjrVX57qdIV8AU2w&pkc=AFgZ2tlqZ7NkrSY3mLJQ9oY4rYS6ISBHczIdO2GfED7X6ZOwe1uLcKZ4_esOF4P7WHvRJgfkU-MPHGh_3EXo785aBcgRIbe0iQ&cp=9&gs_id=y&xhr=t&q=roller+lifter+failures&pf=p&output=search&sclient=psy-ab&oq=roller+li&gs_l=&pbx=1&bav=on.2,or.r_gc.r_pw.r_qf.&fp=42fb278275950100&biw=1593&bih=978

Did not see any from failure on start up/break in. Most were mismatched apps or racing so will stick by my original statement

Roy, I was not challenging your statement. I was just pointing out roller cams/lifters are not without issues. Roller cams and lifters are superior to flat tappet cams and lifters. It is just a question of cost, benefit, and necessity for most street/strip motors. From what I've seen and experienced, most premature problems with cams (flat tappet or roller) are due to not enough valve spring pressure, wrong break-in procedure, improper oil, and valve train geometry problems (wrong push rod lengths). I think we may be in violent agreement. Chuck

Chuck, I did not take it that way at all.

 

[c9zx]

Did not see any from failure on start up/break in. Most were mismatched apps or racing so will stick by my original statement

Roy, I was not challenging your statement. I was just pointing out roller cams/lifters are not without issues. Roller cams and lifters are superior to flat tappet cams and lifters. It is just a question of cost, benefit, and necessity for most street/strip motors. From what I've seen and experienced, most premature problems with cams (flat tappet or roller) are due to not enough valve spring pressure, wrong break-in procedure, improper oil, and valve train geometry problems (wrong push rod lengths). I think we may be in violent agreement. Chuck

Chuck, I did not take it that way at all.

I didn't think so but I wanted to make sure I had not offended you in some way. Chuck

 

[Tnfastbk]

Roy, I was not challenging your statement. I was just pointing out roller cams/lifters are not without issues. Roller cams and lifters are superior to flat tappet cams and lifters. It is just a question of cost, benefit, and necessity for most street/strip motors. From what I've seen and experienced, most premature problems with cams (flat tappet or roller) are due to not enough valve spring pressure, wrong break-in procedure, improper oil, and valve train geometry problems (wrong push rod lengths). I think we may be in violent agreement. Chuck

Chuck, I did not take it that way at all.

I didn't think so but I wanted to make sure I had not offended you in some way. Chuck

Takes a lot to offend me. We always say if you dish it out be willing to get some back HUH Mark:huh:

 

[rolandmhall]

This has been a very informative discussion. One of the things honestly I didn't put a whole lot of thought into until recently. But knowing what I know now, the type of oil to be used is a very serious decision.

Decided to go with the Brad Penn Oil.

Thanks everybody