whisler151

So a month or two ago I started hearing a louder than normal ticking form the driver side of the engine. I chalked it up as me being hypersensitive. About three weeks ago I was going WOT and at 5000rpm the car acted as though it hit the rev limiter. it completely dropped power. I thought it was an issue in the tune so I finally made it to SNL today to get my problem dealt with. After some data logging it cylinder 5 was misfiring. We swapped the plug and plug wire, no difference. Opened up the valve cover and BINGO!

They swapped it out for a new one and now its good as new.

By the way, my springs are PRC dual spring .675".

-T-

iTrader: (2)

What are your seat pressures?

tityrous

Do you always let the engine temps rise to a normal operating range before you drive it? If don't let high pressure springs get to normal temps before operating they snap easier!

whisler151

No idea. I'll as SNL.

Yep, always let it warm up to 150 before leaving parking garage. I'll let it warm up to 170 from now on. I never get on it till it's at 190.

tityrous

things do happen lol glad its fixed

Fuzzy_Wuzzy

iTrader: (8)

At least you had dual springs as well... sometimes that is a nice little insurance policy

maxspeed05V

iTrader: (4)

Glad to hear nothing broke, it could of gone alot worse.

Patriot duals here reving to 6800

SilveradoSS500

WHOA...happened to me 1 month ago!

Looks like you are fine!

NO PISTON SLAP?

Do a compression test and swap the springs, your good!

Who is doing the work?

adanieljohnson1

iTrader: (1)

Good to hear it man! I'm glad it wasn't anything more serious

itsslow98

iTrader: (18)

Why not be safe and upgrade the whole set? I thought that was a common thing but i could be wrong. I hear that with higher lift cams every 2 years you should really upgrade to be safe.

bamacaddy

iTrader: (1)

I been meaning to tell you that I love your sig "My sexy bitch only likes 2nd gear pulls" and I have to admit I used it the other night when a dude in a Mustang wanted to race me from a dig.....sorry didn't mean to highjack the thread

adanieljohnson1

iTrader: (1)

Haha... I've been waiting to get a chance to use it my self.. hope u handed that stang his ***..

maxspeed05V

iTrader: (4)

Really?, What do you consider high lift.
ause I though it was more like 30-40k.

I would definatly call PRC up and try to exchange the hole set . Could be a bad batch.

Especialy if the car was warmed up and you didnt hold it at the limiter to a short period of time. Theres no reason the spring should of poped.

itsslow98

iTrader: (18)

I figured higher lift was .600. I guess if it hasnt been abused too bad then id imagine you could go longer then 2 years. Im sure thats just cautious people that ive read on here and some other places.

whisler151

My lift is well above .600. After assessing the situation we just replaced the one. There was no other damage done and the one that broke was more than likely a random bad spring.

My springs have around 10,000 miles on them. If anything else happens then you know I will have all replaced under warranty. These are great springs, if there is a problem with them Texas Speed will stand behind them. http://www.texas-speed.com/shop/item...=1013&catid=48

**** happens when you mod...I'm not worried about it.

itsslow98

iTrader: (18)

I agree when you mod, breakage is fair game lol. Even the best quality parts dont always last. Good luck hopefully you wont have any other problems.

scatillac

iTrader: (12)

ECT is not a good indicator for spring heat after a cold start. If you plan on getting into it, monitor the oil temperature as it is the medium for spring coolant as the engine runs.

Normal operating oil temperature achievement should be your guide.

Although higher lift is a factor in spring life, the ramp rates are more critical indicator and a combination of the two commands attention . More severe rates will require closer monitoring and a replacement schedule recommended by the cam designer or engine builder.

Fords=Breakfast

it seems as though i entered this post a few months late, but still i have a question for you (OP)

did your tick sound almost like a slight exhaust leak that you heard more in lower gears but still was a steady consistent tick?

sounds are always hard to specify without videos i know, and i can not get a video of my sound i dont think, but will try if requested.

if anybody else can shine a light on the situation it would be greatly appreciated!

whisler151

I actually just had another spring break. The springs were all replaced with the PRC .650" duals. Apparently there was a problem with some batches of the PRC .675" duals.

What gave away the broken spring was when I would hit 5k rpm, the rpms would not go any higher. The engine would flutter and it felt like a dramatic loss of power. This is due to the backup spring being maxed out. If you are able to go to red line I would wager to say that your springs are fine.

Regarding the exhaust leak sound, i'm not sure. I do remember hearing that sound at low rpms. I will check later today to see if that sound is still present.

Fords=Breakfast

i appreciate it. if you could pm me about it that would be great; im looking to at least take a few stabs at it myself before "investing" some more money into the car at the moment because 1000$ just went into him today and well... it's not every day a Welsh man such as myself is fine with spending that much money in such a short amount of time.

my second guess would be a lifter?

Note: my car goes over 5k rpm with ease and without hesitation~ my situation isn't really causing me problems i can describe besides that noise. on my way home from getting all my brake work etc done today, i listened and noticed i hear the sound in every gear even over my longtubes, cam, and full exhaust. the sound is still "quiet" as far as sounds go, but noticeable. i will see what i can do for a sound clip/video if possible tomorrow morning when i do my radiator flush and fuel filter replacement.