V8 engine wont turn - mechanically bl... Log Out | Topics | Search
Moderators | Register | Edit Profile

Australian RR Forums » Silver Shadow Series » V8 engine wont turn - mechanically blocked. « Previous Next »

Author Message
Top of pagePrevious messageNext messageBottom of page Link to this message

David Lacey
Experienced User
Username: dlacey

Post Number: 101
Registered: 11-2010
Posted on Monday, 16 June, 2025 - 10:07:   Edit PostDelete PostView Post/Check IP

All,
I am trying to rescue an abandoned Bentley S3 with the early 6.2 V8. I ask here in the Shadow forum as there's likely more V8 knowledge here.
With the plugs out it will turn about 20-30 degrees (by turning the flywheel, laying under the car)..in either direction it is then stopped by quite a solid blockage... In the section where it turns it's moving quite freely, but then something's hitting....
Could this be stuck valves?? Is it an 'interference' engine??
I will get a cheap eBay borescope and peer inside to try to find the blockage.

Any suggestions/theories/experience most appreciated!

Dave
Top of pagePrevious messageNext messageBottom of page Link to this message

Mika Rikkinen
Yet to post message
Username: mri

Post Number: 1
Registered: 10-2020
Posted on Tuesday, 17 June, 2025 - 21:15:   Edit PostDelete PostView Post/Check IP

I`d take valve covers off and ask some one checking valve movement while turning engine. If valve stuck, what is a good guess, You should be able to spot it.
Top of pagePrevious messageNext messageBottom of page Link to this message

Jeff Martin
Frequent User
Username: jeff_r_1

Post Number: 735
Registered: 07-2018
Posted on Wednesday, 18 June, 2025 - 03:40:   Edit PostDelete PostView Post/Check IP

Look for bent push rods too.
Get the borescope, you will find many uses for it.
Mine has 3 camera's on the end, on on the front and 2 on the side, 180 degrees apart.

(you can get one with a shorter extension)

https://www.amazon.ca/dp/B0C3H1N8VQ?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1

Add Your Message Here
Post:
Bold text Italics Underline Create a hyperlink Insert a clipart image

Username: Posting Information:
This is a public posting area. Enter your username and password if you have an account. Otherwise, enter your full name as your username and leave the password blank. Your e-mail address is optional.
Please quote Chassis Numbers for all vehicles mentioned.
Password:
E-mail:
Action: