SmartOJ

iTrader: (44)

my original shortblock took a crap a few months back and now i have a new one.so today i began disassembling the old engine and found something that didnt look quite right..actually not right at all...there were shavings all behind this plate.the retainer bolts were torqued to spec with red loctite.first thing came to mind was the cam was walking bolts all bolts were still tight when i began to disassemble.the cam is from comp and comp cams is local to me so i took it there today.several guys mic'd it and looked it over and the cam checked out fine and was to spec.he says my retainer bolts were hitting the gear on the backside..you can see the markings where it was hitting.but how can that happen when they were torqued and loctited and not backed out???????? would that really cause this damage or was he just throwing the problem on me?

G Engines

Imo the head of the bolt is too large or the back of the timing gear depth is not correct.

SmartOJ

iTrader: (44)

SmartOJ

iTrader: (44)

SmartOJ

iTrader: (44)

if u cant tell the timing gear dug deep grooves in itself and the retainer plate also..stock timing set and stock bolts..guy at comp says i cant reuse stock cam bolts because they are TTY and they are stretched........hmmmm

SmartOJ

iTrader: (44)

how can they be incorrect or too large when its the stock parts unchanged?

Burken01

iTrader: (88)

you sure the cam retainer is stock?

could of been a new style cam retainer plate (which looks stock) but needs the new style counter sink bolts instead of the old bolts that cam with the engine..

what does the other side of the cam retainer plate look like? post a pic, if there is counter sink grooves in the bolt holes you have to have the proper bolts or else the will stick out and grind into your gear.

Burken01

iTrader: (88)

nvm reverse that, what do you bolts look like

SmartOJ

iTrader: (44)

it was the STOCK 2000 retainer..the one i bought from the dealer today is the new style which requires the different bolts. i already boaght a new timing set from comp and the the retainer plate but i still want to know if anyone has a idea on what truly caused this as i dont want to ruin my new shortblock....

SmartOJ

iTrader: (44)

2 of the retainer bolts looks silver on top where it looks like they were hitting the gear. but i still dont see how that happened when the bolts are not backed out.......smh

SmartOJ

iTrader: (44)

unless the gear is bent or somthing maybe?

Burken01

iTrader: (88)

somebody could of used diffrent bolts for the cam retainer plate, i know you said it was stock.. but the car is 12 years old and bone stock is hard to come by these days..

SmartOJ

iTrader: (44)

when i did the cam swap in march it was not like this.i did a heads and cam upgrade....put no more than 100 miles on the car and the bottom end developed a knock.been sitting since then and just now opened here up...something went wrong in that "100" miles i just can pinpoint what yet

poloaa009

Imo the head of the bolt is too large or the back of the timing gear depth is not correct.

SmartOJ

iTrader: (44)

So does the head hitting the gear go hand in hand with the damage I have?if no one has noticed im looking for sum reassurance

bww3588

iTrader: (49)

Did you check cam end play when you installed it? Could have been walking backwards and pulling sprocket into the retainer plate bolts.

G Engines

You need to measure the end of the cam from the front ware it meats the cam gear to the bearing journal. I have had a cam the was machined incorrect and would lock the engine up when I torqued the cam bolts. I do understand that comp says the cam is in specs. but at the same time their stance of problems such as this is its never their fault. So if the only thing you changed is the cam and you reused the same timing set, bolts, retaining plate, than that only leaves one part.

Old Geezer

iTrader: (3)

Can't tell 100%,[without the parts]. But, from the looks of the depth of the rub marks on the gear,[Notice the difference in the "intensity"] and the discoloration on the area that the cam contacts, it looks like the cam gear was not flat on the end of the cam.....

PREDATOR-Z

http://www.vincihiperformance.com/LS...GE%20.HTML#CAM RETAINER PLATE WEAR

S10xGN

iTrader: (11)

One thing for sure, it is no longer "stock" if it had red loctite on the bolts. Someone before you replaced the retainer bolts with the wrong ones. Look around for mismatched bolt heads, you'll prolly find a couple with shorter length bolt heads doing service somewhere a short-headed bolt is not required.


Nice link, now I'll need to send a few hours reading!