2000ws6transam

iTrader: (5)

So this is the 3rd one in 1000 miles...i have a 224/228 .535 .538 cam (114 +2) LSA 7.400 pushrods. Heads have been milled .20-.030 The stel seat that the pushrod/rocker connect keeps falling out. i do the 22 Ft lb toque from LS1howto. Just got an adjustable pushrod and have it torn down. Any idea the proper way to check the length? could they be too short and have play causing them to fall out? Seems very quiet when running.

2000ws6transam

iTrader: (5)

here are some pics broken rocker on the right (both) middle picture too

chrs1313

iTrader: (24)

that should not come out...not sure if it is a defect or the way it is setup...yella Terra fully warranties them...send them in for a new set

cookba

iTrader: (10)

they had some issues with a batch a while back. email or call them and they will send you an entire new set and you send back all the old ones.

2000ws6transam

iTrader: (5)

well i called them.. and all they said was goto a vendor and buy new ones ... maybe i will have to bitch this time. cause there seems to be an issue in my opinion not to mention chunks of steel floating around f in up the engine...

vettenuts

iTrader: (4)

Do a search here and on Corvetteforum. Jim from Yella Terra posted his e-mail contact information for anyone having problems. Contact him directly be be aware they are on Easter Holiday and not sure they will be back until the middle of next week.

Also, if you are following LS1howto on setting these up, that is incorrect. Did you set the wipe pattern first using shims and then once that is done measure for pushrod length.


One other thing to check is that the pushrods aren't hitting the pushrod hole in the head during the rocker motion. There were some issues with some heads with pushrod contact.

vettenuts

iTrader: (4)

OK, found Jim's information here: Link

Here is how to set the wipe pattern: Wipe Pattern - Yella Terra Rockers

2000ws6transam

iTrader: (5)

cool, thanks for the info and link! other then the seats popping out these have been totally good easy to install and no noises .

2000ws6transam

iTrader: (5)

he said my rockers were way to old to warranty, but he wanted me to send in some good pictures and Jim said "Say that Im intrigued as to what happened with the setup so we can have a look at them and if we can repair them".

vettenuts

iTrader: (4)

Looking at your photos again, are those the original design or the ultra light design?

2000ws6transam

iTrader: (5)

originals

onefastgator

Did you try going back through the vendor that you orignally bought them from to see if they can help you somehow?

2000ws6transam

iTrader: (5)

yeah....No got them off ebay not too long after they came out, i wanna say they were 600-800 new at the time and i got them for around 300. They were in really good condition little to no wear on the moving parts. still talking to the yella terra guys if they can fix them or help me on a decent price for replacments... am i asking too much for a better deal on a failed product?

vettenuts

iTrader: (4)

Depends on how long you want to be without the car. New Era usually has good prices on the Yella Terra ultralights.

2000ws6transam

iTrader: (5)

Yeah its been down around 4 weeks now ...had to get exhaust put on the car (g/f got be borla cat back for Christmas) tax return went to replacing the 3 bent rims that were on the car...from ebay tring to sell the old rims to get funds for the new rockers now or i have to wait and see if they will hook me up at least with a deal maybe. Guess i will keep dialing in the paint job till it moves again lol

Gray86hatch

iTrader: (83)

why not use stock rockers and a trunion kit?

Tim

2000ws6transam

iTrader: (5)

well, when i build the motor back in 05/06 i got rid of them

garygnu

could be bad valve seats ,or bad head work(not heat treated).I don't see how a rocker arm could cause a valve seat to drop.are the valve springs good?

2000ws6transam

iTrader: (5)

no, not the valve seat there is a steal seat pressed in the pushrod side of the rocker arm ill post a pic

2000ws6transam

iTrader: (5)

i think im on my 4th email to 2 different yella terra guys with no reply, im being nice and everything not sure what the hell is going on... they intially replied to me in 3 days and asked for more info and pics so i sent all the info they requested and now i think im on week 3 with no reply....