Timing tensioner stud snapped - Boo

[Pr0x1mity]

Timing tensioner stud snapped - Boo

The other night my RB30DET suffered greatly. Thought I ran out of fuel or something. Filled it up and nothing.

 

The question:

• RB30e bottom end
• RB30ET 20thou down pistons
• RB25de neo head

Interference or nah?

 

Am replacing the stud, taking cams out and putting it all to TDC. Hoping for the best.. If not, new head I guess

Has anyone else had timing issues and got away with it? Do you fancy my chances?

[Duncan]

I'm not certain about rb30 hybrid, but all other RBs (except apparently rb20) are interference.

[dave1200]

If it's a neo head you'll know if you've bent valves or not by just putting some feelers between cam and lifter. Standard gaps are something in the 0.010" range, if you've bent a valve you'll find a lot more than that gap.

PS - I don't like your chances.....

Dave

Edited May 3, 2017 by dave1200

[KiwiRS4T]

Take the head off anyway and hope its only valves - but you may have damaged pistons as well.

[Azztrix]

Head off man. Don't risk it!

[iruvyouskyrine]

I'm not certain about rb30 hybrid, but all other RBs (except apparently rb20) are interference.

Where did you hear that RB20 isn't an interference engine? Surely it would be the same as all other RB's

[Duncan]

lol, I did say apparently....source is unvalidated information I picked up on here sometime over the years....

[r32-25t]

I can tell you first hand the rb20 is interference 

[Scott Black]

On the engines I've dealt with that have had bent valves about 80% have been able to get new valves. Lap the seats and away you go. The others were not so lucky

[Scott Black]

I can tell you first hand the rb20 is interference 

lol, I did say apparently....source is unvalidated information I picked up on here sometime over the years....

I also know there interference. Yet I'm interested if your experience has anything to do with your user name

[Pr0x1mity]

It was interference. Only JUST touched.