mad dog roller rockers : V-Twin Forum: Harley Davidson Forums

braz28 · 07-10-2006, 11:54 PM

Just purchased a set of mad dog racing roller rockers on ebay, they are listed for up to 585 + lift cams.

I have a set of 678 lift cams, should i install the ebay rockers or resell them and buy more expensive set.

From their description they say up to 585 lift, then they write +. what to consider

tried calling them but they are not too knowledgeable , only answer i get is what is written on their boxes.

Would like to get this together by the end of week to go riding,

please help

thanks

Mtclassic · 07-10-2006, 11:56 PM

make sure they are the updated ones. I have read about failures with these.

braz28 · 07-11-2006, 12:17 AM

Thats what they are , i had the first version and one tip broke and caused a lot of damage. They were described as up to .700 lift .

The ones i got are the updated version and were replaced free of charge, but they are listed as up to .585 lift +

I am skeptic as to install them and cause damage again, but dont feel on spending $500.00 plus on a set of rockers when i have these on hand if they can do the job

nighttrain67 · 07-11-2006, 09:59 AM

I would never put a set of these rockers in any motor, nevermind a higher lift cam motor with higher spring pressures. Updated rockers or not updated rockers......the Maddog rockers are just waiting to trash your motor. This is not an area where I would be trying to save a few bucks. You don't have to spend $500 for a quality roller rockers. Give Steve at GMR or Brian Nallin at Revolution Performance a call and they will set you up with a quality forged set of rockers for under $200......the Maddogs are just not worth the chance, in my opinion.

Larry5150 · 07-11-2006, 10:09 AM

Get rid of the madd junk - buy a name you cant count on and trust.
That junk is made over seas - Even the updated ones are JUNK...!!!!!

I too., learned the hard way - i had the updated ones ALSO break on me.
The so called updated second set cost me a set of new heads and rocker box`s.

2,000 bucks the second time around - Is it worth it..?? ABSOLUTELY NOT...!

Dont buy the TP or RevJunk ones either - the quality of those sucks too.

Spend the money for the SE... Crane... S an S... Jims...
Trust me., you wont hate yourself later.

Good Luck with your build

just my 2 cents

nighttrain67 · 07-11-2006, 10:19 AM

I beg to differ that the RevPerf Rockers are junk.....You should keep those kind of comments to yourself unless you have first hand experience with them. There are plenty of high hp motors out there that are running these rockers without any failures that I know of......Maybe Steve or Brian will chime in here. It is not fair to to call them junk or trash a companies product especially if your information is wrong.

hdmarsh77 · 07-11-2006, 10:36 AM

Quote:

Originally Posted by nighttrain67

I beg to differ that the RevPerf Rockers are junk.....You should keep those kind of comments to yourself unless you have first hand experience with them. There are plenty of high hp motors out there that are running these rockers without any failures that I know of......Maybe Steve or Brian will chime in here. It is not fair to to call them junk or trash a companies product especially if your information is wrong.

Maybe he meant RevTECH. RevPERF is quality stuff from what I've read.

nighttrain67 · 07-11-2006, 10:41 AM

Good Point.......Your certainly correct. RevPerf and RevTech should not be confused with each other. There is no comparison, as RevPerf is a quality operation that puts out top quality stuff. The same may not be said about RevTech.

Larry5150 · 07-11-2006, 01:44 PM

Quote:

Originally Posted by nighttrain67

I beg to differ that the RevPerf Rockers are junk.....You should keep those kind of comments to yourself unless you have first hand experience with them. There are plenty of high hp motors out there that are running these rockers without any failures that I know of......Maybe Steve or Brian will chime in here. It is not fair to to call them junk or trash a companies product especially if your information is wrong.

WOW., Guess i should be MORE brand specific in here., but dont wanna piss anybody off. I`ll base this on being my fault for not being politically correct when i chimed in to try to help someone not to make the big mistakes i`ve seen others make.

Nighttrain67..,
I feel i can bash any product i want., especially when i`ve seen many failures in a row with certain products. I wouldnt want to see someone spend their hard earned cash on something that wont or wouldnt hold up for them. Its very expensive to blindly make a mistake and have to pay twice. Anyone who would hold back information about the issues they`ve had or seen would be bad for others. We ALL., wanna know what works or dont work. We`re all here to help others out., and if its good or bad., i would wanna hear about it just like braz28 wants to hear from others that speak truth in their opinions of suggestions. I was just puttin in my 2 cents on the matter is all. I`m not lookin for a pissin contest by any meens. From now on., i`ll be more specific on my words in here. You are right., revperf is EXCELLENT quality. I`ve never heard of any issues there at all. So i deserve the beatin i just got from you.

REVTEC;...!!!!! MADE IN CHINA....!!!!!!!!
I have seen these come in my own shop broken - Any questions why...???
I can surely give you an easy answer..... Quality...!!!

Now also ask yourself why revtec; sells transmissions and gear componets for half the price of any of their competitors. hmmmmm....???..., i wonder why that is...???

I have over 30 years of experience in the wrench turning harley world., and i`ve surely seen alot in those 30 plus years.., trust me..! So tread lightly on me guyz.

hdmarsh77..,
thank yo for being so kind as to clearing up my faultful political mistake. I am greatful..! RevPerf is very well known and VERY good quality. I didnt realize how close my words got., to bashing someone else`s products.

REVPERFORMANCE.... my deepest apoligies for my political writing. It was revtech i was talking about.

Anyway.., as they say., You get what ya pay for.

ViennaHog · 07-11-2006, 03:12 PM

I am conservative when it comes parts selection. Off brands have to prove over and over again that they have reliable processes in place to supply a product that is 99.9995% problem free. How can you achieve that? Strength is in numbers, big numbers of products that stand the test on the open road. Would I try to save $200 on a set of roller rockers in a $5000 engine? Well, you guessed it right.

nw_guy4_fun · 07-11-2006, 03:19 PM

Vienna is right, why even bother taking a chance. This is high lift and the part even by virtue of brand name has a poor history. The cost of a failure will exceed any money saved.
I would if in your shoes sell them and buy a set of Baisleys corrected geometry units for lift that high.

Totenkopf · 07-11-2006, 03:28 PM

VH and I think alike. You can certainly spend too much for something BUT you can easily spend too little that ends up costing you more in the long run. Do your research, buy the right part for the application and do it once.

nw_guy gives you excellent advice.

FXDRYDR · 07-11-2006, 03:59 PM

Not being much of a wrench, the last thing I want to do is put in a critical part with an established history of sub-standard quality. In their defense, the company importing and marketing them owned up to the original problem and replaced the bad rollers... but I don't think I'd be using them in my motor.

nighttrain67 · 07-11-2006, 04:14 PM

Quote:

Originally Posted by nw_guy4_fun

I would if in your shoes sell them and buy a set of Baisleys corrected geometry units for lift that high.

Keep in mind that when Dan Baisley sets up corrected geometry valve trains he needs to know the length of the valve stem and the lift of the cam. He also mills the deck of the top of the head to correct the geometry. In other words, to get a set of his corrected geometry arms, your more than likely going to have to send him your heads and rocker assembly. He does offer standard rockers that are bolt ons. I have a set of corrected geometry rockers that he did when he did my heads on my last setup. He does a very nice job on the rockers......but they ain't cheap.

braz28 · 07-11-2006, 10:42 PM

You guys are right about the updated ones also, i was looking at them closer this afternoon and one of them as a casting defect, the cup where the pushrods sit is not properly casted and will definitely break also as my first set.

Now that i paid the price for taiwan junk, what do you guys recommend, i will pay $500.00 if i have to but any more options

thanks