PRW,Don't do it!!!!

-
newby

newby

Well-Known Member
Joined
Apr 10, 2011
Messages
386
Reaction score
22
Location
cobblehill b.c. canada
Some of you may have followed my engine build a few summers ago. Just a piece of helpful advice .Stay away from the prw roller tip rockers and shaft set up for the small block 340. After 10 000 miles on a mild street motor they are f/,#$5*ed. Almost completly worn through the bronze bushings and the shafts are worn badly as well. After further inspection of the so called hardened shaft we found that a normal flat file could bite into it easily. NICE STUFF JUNK!!!!!! Thanks for listening to my rant.:wack:
 
did you clean then pre lube them before assembly?

did you prime the engine before starting?

did you check for oil up top?


we need more before just jumping on board...
 
seems like a lack of oil to them,but yeah hardend shafts should not be all that soft.
 
805moparkid said:
did you clean then pre lube them before assembly?

did you prime the engine before starting?

did you check for oil up top?


we need more before just jumping on board...
Click to expand...

I think the file test is information enough , but if you want to withhold judgement , be my guest.
My mistrust of offshore parts has nothing to do with a group of people who wear pajamas during the day and eat with sticks.
Their metallurgy has a history of being real ****.
And that is all I need to know.
They have gotten a lot better , that is for sure.
But I don't know that getting worse was even an option.
Compstar and Scat have some really good parts........but they cost more.
Buying the bottom of the barrel , cheapest part you can find has consequences. Not all are severe , but none are good.
 
Yes assembly was flawless, Dad is a veteran engine builder,never had anything like this happen in the past.
 
tubtar said:
I think the file test is information enough , but if you want to withhold judgement , be my guest.
My mistrust of offshore parts has nothing to do with a group of people who wear pajamas during the day and eat with sticks.
Their metallurgy has a history of being real ****.
And that is all I need to know.
They have gotten a lot better , that is for sure.
But I don't know that getting worse was even an option.
Compstar and Scat have some really good parts........but they cost more.
Buying the bottom of the barrel , cheapest part you can find has consequences. Not all are severe , but none are good.
Click to expand...

Problem with your comment on buying bottom of the barrel parts is this stuff wasn't cheap ,definately not harland sharp quality but this is a basic street motor. Supposed to be a step up from stock, bythe time this crap arrived here was over 500 bucks.
 
Better question. What vendor,did you buy the whole assembly from? Or different suppliers, rockers and shafts? Now knocking anything,made this mistake myself.....
 
tubtar said:
I think the file test is information enough , but if you want to withhold judgement , be my guest.
My mistrust of offshore parts has nothing to do with a group of people who wear pajamas during the day and eat with sticks.
Their metallurgy has a history of being real ****.
And that is all I need to know.
They have gotten a lot better , that is for sure.
But I don't know that getting worse was even an option.
Compstar and Scat have some really good parts........but they cost more.
Buying the bottom of the barrel , cheapest part you can find has consequences. Not all are severe , but none are good.
Click to expand...


x2.
 
Thanks for the heads up. They were on my top three list of rockers in my price range. I've been leaning toward the Hughes as of late.
 
Scat cranks need to be thoroughly checked before installing them. The shoulders of the journals sometimes are not machined at the very edges, due to wear and tear of the manufacturing equipment. so instead of your mains being perfectly straight, at the ends they are slightly raised... which causes binding if you dont blueprint their cranks before installing.

just sayin'...
 
mopar79sean said:
Thanks for the heads up. They were on my top three list of rockers in my price range. I've been leaning toward the Hughes as of late.
Click to expand...


Operable phrase there "in my price range". If you "can't afford" good ones now, can you afford to replace the cheap ones later if/when they fail?
 
If it's made in China and it's good today, tomorrow can be a whole 'nother story.
 
newby said:
Problem with your comment on buying bottom of the barrel parts is this stuff wasn't cheap ,definately not harland sharp quality but this is a basic street motor. Supposed to be a step up from stock, bythe time this crap arrived here was over 500 bucks.
Click to expand...


PRW is the bottom of the barrel......O.K. , except for the Egay vendors with their PRW seconds.
There are a couple steps up before you get to the full roller Harland Sharps.
Comp is a nice choice , Hughes rocker and shaft packages are good for what they are. The bushed Harland Sharps would be a nice choice.
The rockers , as you know , are only part of the deal. Good shafts and hold downs also play a part.
 
tubtar said:
PRW is the bottom of the barrel......O.K. , except for the Egay vendors with their PRW seconds.
There are a couple steps up before you get to the full roller Harland Sharps.
Comp is a nice choice , Hughes rocker and shaft packages are good for what they are. The bushed Harland Sharps would be a nice choice.
The rockers , as you know , are only part of the deal. Good shafts and hold downs also play a part.
Click to expand...

what do you mean by this exactly? good for what they are?

imo, they are just as good as comps, and harland sharps.
 
actually Jesel is top-of-the-line
also more expensive than any of the others by far.

if you start buying the Jesel stuff you might as well be building a 426 hemi due to the premium prices
 
my almost ancient crane golds are still hangin in there, and they dont even have any bushings..
 
Virtually all Chinaman valve train components are JUNK. PRW, ProComp, no name Ebay stuff its all gonna end badly. Same goes for a lot of parts.
 
Everything from China is crap? Especially Apple stuff. So why is that? China can make top quality or the worst quality. It's not China it's whoever puts in the order and specs for production. So it's not China's fault, and not everything should he grouped in one lot, it's all about how good whoever is producing the part wants the part to be. I am forced to order my work clothes through specific made in the USA plants with high paid union workforce. These $100 work clothes and boots don't last as long as the $10-$15 stuff I buy at Walmart.
So maybe the parts are crap but that's only because the person who speced the parts told then just make them as inexpensive as possible. That's not China's fault just following orders.
 
mopardude318 said:
what do you mean by this exactly? good for what they are?

imo, they are just as good as comps, and harland sharps.
Click to expand...


It means exactly what it says.
They are not as good as the Harland Sharp rockers with the needle bearing fulcrum.
I'm sorry.......they aren't.
They aren't T&D's.
They aren't PRW's.
They are pretty good for what they are......a decent set up for anything up to a small roller in a street / strip application.
They are on par with the bushed Sharps and the Comps for sure.
Which are also pretty good for what they are.
I have the needle bearing Harland Sharps on one motor and T&D's on my W-9's and I didn't buy either on a lark. I did some homework and bought more than I needed for the 340 and the best for the 405.
If you get into elevated rpm's and higher spring loads , there are some parts that become marginal.
I was not trying to put Hughes down by any means.
 
Hersbird said:
Everything from China is crap? Especially Apple stuff. So why is that? China can make top quality or the worst quality. It's not China it's whoever puts in the order and specs for production. So it's not China's fault, and not everything should he grouped in one lot, it's all about how good whoever is producing the part wants the part to be. I am forced to order my work clothes through specific made in the USA plants with high paid union workforce. These $100 work clothes and boots don't last as long as the $10-$15 stuff I buy at Walmart.
So maybe the parts are crap but that's only because the person who speced the parts told then just make them as inexpensive as possible. That's not China's fault just following orders.
Click to expand...
I don't know if your post is aimed at me or not. All I'm saying is Chinese made rocked arms are ALWAYS JUNK. Not once have I ever seen a high quality durable Chinese made rocker arm.
 
You must log in or register to reply here.
-

Back
Top