Star Letter - Chrysler problems

Published: 04:08PM Nov 18th, 2010
By:

Dear Classic American,... I’m writing in regarding the problems your contributor Ed Hall has been having with his Chrysler, I would guess you have almost answered your own question. It’s the timing chain. The easy way to check the valve timing is as follows. Remove both rocker boxes, turn the engine to T.D.C. firing number one.

Star Letter - Chrysler problems

Use the crank timing marks. Both valves should be closed, at the same time the valves on number six should be rocking, i.e. one should be about to open, the other should be closing. Rocking the crank slightly backwards and forwards will show what I mean. I have said number six but that is only from memory you had better check on that.

The chain has probably stretched and the nylon coating has probably started to break up on the cam sprocket I had a similar problem on an Oldsmobile many years ago. It took me ages to sort it out. Since then I have seen it several times, sometimes on low mileage engines. And they say Morse chains don’t stretch! I hope that solves your problem.

Mel Atkinson
Worcester


Mel Atkinson is turning into one of the most prolific correspondents to Classic American and we reckon be long ’til he has his own column here! This is what Classic American contributor Ed Hall had to say in response to Mel’s advice: ‘Many thanks for your advice Mel. Having done some investigations on the Chrysler's engine it looks like you’re spot on. A knackered timing chain/sprocket is the cause. There are 5 degrees of play in the crank before the cam/dizzy start to move – I measured this using the TDC marker. I guess 5 degrees at the crank would equal 10 degrees at the dizzy, which explains why I needed an indicated 20 degrees of static advance to get it to run. And with the valve timing so retarded it’s no wonder it runs so badly. You can actually hear the chain take up slack as you swing the crank either way using a breaker bar. Many thanks for this invaluable bit of advice…

0 Responses to “Star Letter - Chrysler problems”

Comments

Please login or register to post a comment

Current Issue: Nov 2014

Issue Nov 2014

♦ Win motor show tickets
♦ Meet the most famous GTO ever!
+ 50 years of Pontiac GTO
♦ 1968 Pontiac GTO
♦ 1969 Pontiac GP
♦ 1951 Pontiac Chieftain
♦ Jim Wangers' GTO Collection
♦ 1978 Trans Am
♦ 1958 Savoy

PLUS:

Buy this issue now

• Next issue on sale: November 20, 2014

Issue 283

Issue 283
Nov 2014

The UK's Number 1 for 26 years

Subscribe and get this issue

Buy it now facebook Sample on-line

Other Letters

February Star Letter: Wot I learned in skool

February Star Letter: Wot I learned in skool

Dear Classic American,
I was interested to read your review of the latest incarnation of the Chrysler 300 (CA ...

Read More »

Star Letter: Going Dutch

Star Letter: Going Dutch

Dear Classic American,
I had to react on the ‘Behind the wheel’ feature in the November issue.

Read More »

View all...

Advertisements

Related magazines:

Aviation Classics Classic Bike Guide magazine Motorcycle Sport and Leisure magazine

 

Find a retailer:

Use our handy tool to find your nearest stockist!
Find your nearest Stockist

Advertising Deadline:

Trade Advertising Deadlines:
December 2014: October 24, 2014
January 2015: November 19, 2014
For more information contact our Advertising representative

To book free classifieds use our online form:

Book advertising here

Next Issue Out:

November 20, 2014