Happy Easter and welcome to Packard Motor Car Information! If you're new here, please register for a free account.  
Login
Username:

Password:

Remember me



Lost Password?

Register now!
FAQ's
Main Menu
Recent Forum Topics
Who is Online
103 user(s) are online (59 user(s) are browsing Forums)

Members: 2
Guests: 101

pmhowe, Bob J, more...
Helping out...
PackardInfo is a free resource for Packard Owners that is completely supported by user donations. If you can help out, that would be great!

Donate via PayPal
Video Content
Visit PackardInfo.com YouTube Playlist

Donate via PayPal

Forum Index


Board index » All Posts (peterpackard)




Re: Final gear ratios for 5th, 6th, and 7th series Packards.
#1
Home away from home
Home away from home

Peter Packard
IMHO fitting a higher diff ratio is a bit of a trade off in an older car as you do not generally have the horsepower to drive a higher ratio particularly in hilly country. The 5th Series Six has approx 85 hp gross which is probably 45 at the wheels. I have fitted a 4.38 ratio to my 7 pass 304 bodied 533 and with a trailer of old bikes attached it will sit on 50 mph comfortably and takes most hills in top gear. It would probably not pull with a 4.1 ratio. Peter Toet

Attach file:



jpg  1927 Packard & Trailer - Copy.JPG (81.90 KB)
154_66009ed818e26.jpg 640X480 px

Posted on: 3/24 16:45
I like people, Packards and old motorbikes
 Top 


Re: Final gear ratios for 5th, 6th, and 7th series Packards.
#2
Home away from home
Home away from home

Peter Packard
Modern brake linings will NOT improve your braking feel and will decrease your brake effectiveness. The cable and rod brakes on pre hydraulic systems always have a take-up play which is less noticeable with the early Thirties Vacuum boosted mechanical braking systems. Your woven linings are the best but are now totally illegal in Australia. Importing a vehicle with OEM asbestos parts is a nightmare and costs around 10k to 15k to get around. Your rear axle ratio can be checked by jacking one rear wheel up and rotating the wheel two revolutions whilst counting the tailshaft revolutions. If the tailshaft revs are over 4.5 then you have as 4.69 diff ratio. Peter T

Posted on: 3/23 1:51
I like people, Packards and old motorbikes
 Top 


Re: Final gear ratios for 5th, 6th, and 7th series Packards.
#3
Home away from home
Home away from home

Peter Packard
Standard ratio is 4.69 to 1. Sports models were 4.38 to 1. In either case 50 mph is fine, 55 mph is pushing it and 60 mph sustained should be done only on the way to the engine rebuilders for new poured big ends. Compression ratio was 4.8 to 1 and quite high for the day. Peter T

Posted on: 3/21 0:57
I like people, Packards and old motorbikes
 Top 


Re: New Zealand Adventures
#4
Home away from home
Home away from home

Peter Packard
Ah...the good old days!

Posted on: 2/19 3:55
I like people, Packards and old motorbikes
 Top 


Re: head gasket torque on 3-25 Twin Six
#5
Home away from home
Home away from home

Peter Packard
Thanks for the Chart Dave, It is helpful and I would err on the side of caution with any settings. I am not sure which grade of material is used in the head studs but I shall call the previous owner's mechanic and ask him for the head torque settings. The matter is not pressing as there are no bubbles in the radiator flow.

Posted on: 1/8 15:29
I like people, Packards and old motorbikes
 Top 


Re: head gasket torque on 3-25 Twin Six
#6
Home away from home
Home away from home

Peter Packard
Thanks Mal, I did ask Will and he said that his mechanic handles that stuff. Looks like I shall be calling his mechanic.

Posted on: 1/8 15:23
I like people, Packards and old motorbikes
 Top 


Re: head gasket torque on 3-25 Twin Six
#7
Home away from home
Home away from home

Peter Packard
Sounds like a good idea, I just thought that rather than re invent the wheel...someone may have already has been through this journey.

Posted on: 1/8 7:12
I like people, Packards and old motorbikes
 Top 


Re: head gasket torque on 3-25 Twin Six
#8
Home away from home
Home away from home

Peter Packard
Hello all, I assume by the lack of response that no one really knows the 3 - 25 Twin Six head torque. It is definitely not in the Owners Manual. I shall therefore Torque to 45 ft/lbs flattening it out from the centre, as it appears reasonable for the head stud size. Any comments or notes of caution based on previous experience would be welcome.

Posted on: 1/8 4:23
I like people, Packards and old motorbikes
 Top 


Re: head gasket torque on 3-25 Twin Six
#9
Home away from home
Home away from home

Peter Packard
Yes Mal, I have always wanted a Veteran Twin Six to complement the 38 Barrymore Twelve. It is a lovely vehicle and I am just fettling it a bit. It has Armstrong Power Steering and takes some shoulder strength to steer. All the best to you Mal. Peter and Ann.

Posted on: 1/7 6:10
I like people, Packards and old motorbikes
 Top 


head gasket torque on 3-25 Twin Six
#10
Home away from home
Home away from home

Peter Packard
What is the recommended head torque dimension in ft lbs( or NM if you are EU) on a 1919 Twin Six please?

Posted on: 1/7 2:53
I like people, Packards and old motorbikes
 Top 



TopTop
(1) 2 3 4 ... 67 »



Search
Recent Photos
Photo of the Day
Recent Registry
Website Comments or Questions?? Click Here Copyright 2006-2024, PackardInfo.com All Rights Reserved