Engine and Transmission Tech

tips, technology, tools and techniques related to vehicle driveline components

Go to Thread: PreviousNext
Go to: Forum ListMessage ListNew TopicLog In
Goto Page: Previous12
Current Page: 2 of 2


mgb260
Jim Nichols
Sequim,WA
(1880 posts)

Registered:
02/29/2008 08:29PM

Main British Car:
1973 MGB roadster 260 Ford V8

Re: ac ace with oldsmobile 215
Posted by: mgb260
Date: April 03, 2018 12:07PM

Kim, That's a pretty hot cam. I'd try 10 advance to start. After warmed up it would not surprise me if you didn't need about 15 or so.


acace
Kim Sorensen

(13 posts)

Registered:
12/31/2017 05:31AM

Main British Car:


Re: ac ace with oldsmobile 215
Posted by: acace
Date: April 03, 2018 03:06PM

hi
tks yr replies

we have a new timingset - edelbrock - 7828 - from Summit

my enginebuilder ask for the cam settings - he thinks it is 5dgree - is that correct - or have i misunderstood -
the ignition timing we can work with when we have the engine installed - but the cam settings should be right first time
can you comment

kim


mgb260
Jim Nichols
Sequim,WA
(1880 posts)

Registered:
02/29/2008 08:29PM

Main British Car:
1973 MGB roadster 260 Ford V8

Re: ac ace with oldsmobile 215
Posted by: mgb260
Date: April 03, 2018 05:35PM

Kim, I apologize I thought you meant ignition timing. Earlier in this thread I found duration and lift. Some cams have 4 degrees or so advance built in. With that high of duration you will need to have the cam advanced. I am at work now, but when I get home I can run it on the Desktop Dyno/Cam Analyzer.


mgb260
Jim Nichols
Sequim,WA
(1880 posts)

Registered:
02/29/2008 08:29PM

Main British Car:
1973 MGB roadster 260 Ford V8

Re: ac ace with oldsmobile 215
Posted by: mgb260
Date: April 03, 2018 09:03PM

Kim, I can't get my program to work but these specs may help:

[www.cranecams.com]

I found the SBC version with the same specs and it shows 5 degrees advance built in. So at straight up you should be 5 degrees advanced.



Edited 1 time(s). Last edit at 04/03/2018 09:15PM by mgb260.


acace
Kim Sorensen

(13 posts)

Registered:
12/31/2017 05:31AM

Main British Car:


Re: ac ace with oldsmobile 215
Posted by: acace
Date: April 04, 2018 07:46AM

Jim - tks - thats what we also concluded - so now when you agree we do it so

tks
kim


acace
Kim Sorensen

(13 posts)

Registered:
12/31/2017 05:31AM

Main British Car:


Re: ac ace with oldsmobile 215
Posted by: acace
Date: April 29, 2018 05:23AM

clutch11111111111111111111.jpg
clutch 5.jpg
clutch222222222222222.jpg
clutch 3.jpg

hello
we are now near completing the assembly - now i start thinking of changing the clutch -
i cannot identify the old - just some numbers on it - no brand - pls can you help - or can you suggest an alternative -it has the 10 spline shaft - 1.125 inch - the clutchplate diameter is app 266-67 mm
pls any suggestions?

best regards
kim


mgb260
Jim Nichols
Sequim,WA
(1880 posts)

Registered:
02/29/2008 08:29PM

Main British Car:
1973 MGB roadster 260 Ford V8

Re: ac ace with oldsmobile 215
Posted by: mgb260
Date: April 29, 2018 06:28AM

Kim, What transmission do you have? My guess is GM (Muncie or Saginaw) 4 speed. Probably GM pressure plate. I may have guessed wrong. I looked up Model 10CF and come up with 65-70 Mustang. I would replace the old Long style 3 arm with a diaphragm type for an easier pedal.



Edited 1 time(s). Last edit at 04/29/2018 06:38AM by mgb260.



acace
Kim Sorensen

(13 posts)

Registered:
12/31/2017 05:31AM

Main British Car:


Re: ac ace with oldsmobile 215
Posted by: acace
Date: April 29, 2018 12:00PM

Hi Jim

my transmission is a borg wagner t10 4 speed
and yes i would like to change to diaphragm type

pls can you come closer to what i should go for?

kim


mgb260
Jim Nichols
Sequim,WA
(1880 posts)

Registered:
02/29/2008 08:29PM

Main British Car:
1973 MGB roadster 260 Ford V8

Re: ac ace with oldsmobile 215
Posted by: mgb260
Date: April 29, 2018 02:49PM

Kim, I have a Ford Toploader with the same old style clutch. I was told the 83-93 Fox Mustang 10" diaphragm will interchange. Take your pressure plate to the auto parts store to compare mounting patterns.



Edited 1 time(s). Last edit at 04/29/2018 02:50PM by mgb260.


acace
Kim Sorensen

(13 posts)

Registered:
12/31/2017 05:31AM

Main British Car:


Re: ac ace with oldsmobile 215
Posted by: acace
Date: April 30, 2018 03:11AM

Jim - thats my problem - i dont have a parts store with this kind of clutches to compare the mounting patterns -
any suggestions of which clutch to choose
i lkooked at summit - they have the hays 85-103 clutchkit - or the RAM 92760 kit - they have both the same spec re sizes
and splines - but no mounting spec - and hight size of the pressure plate house

does anybody know if these kits will fit ?

Kim


ex-tyke
Graham Creswick
Chatham, Ontario, Canada
(990 posts)

Registered:
10/25/2007 11:17AM

Main British Car:
1976 MGB Ford 302

authors avatar
Re: ac ace with oldsmobile 215
Posted by: ex-tyke
Date: April 30, 2018 04:04PM

Quote:
I was told the 83-93 Fox Mustang 10" diaphragm will interchange

Fox body Mustang clutch is 10-1/2" x 1-1/16" x 10T Spline. Might have to go aftermarket to get bolt pattern/dia/spline that is suitable.
Kim, where are you located?


acace
Kim Sorensen

(13 posts)

Registered:
12/31/2017 05:31AM

Main British Car:


Re: ac ace with oldsmobile 215
Posted by: acace
Date: May 03, 2018 03:34AM

graham
my gearbox has a shaft has diameter 1.125 inch - and 10 splines - and size 267 mm
it is a standard T10
The old clutch which are model 10CF - is from Hays - i have been in contact with them out to find out if they have a clutcdh
with the same spec and mounting holes that can replace their old model - but they dont know their old clutches spec -
i asked for a drawing of the mounting holes for one of their new clutches which i thought could be used - but they couldnt provide
that -
so no i am searching for somebody who have replaced a model 10CF clutch with a similar

Graham i am in Denmark - and we have no warehouse where i can go and look at several clutches -
so what do i do

kim


acace
Kim Sorensen

(13 posts)

Registered:
12/31/2017 05:31AM

Main British Car:


Re: ac ace with oldsmobile 215
Posted by: acace
Date: May 03, 2018 03:36AM

Valveclearence

we are about to set the valves - we use the old setup - pls any advice of valve clearences?

tks
kim


mgb260
Jim Nichols
Sequim,WA
(1880 posts)

Registered:
02/29/2008 08:29PM

Main British Car:
1973 MGB roadster 260 Ford V8

Re: ac ace with oldsmobile 215
Posted by: mgb260
Date: May 03, 2018 09:30AM

You may have to drill your flywheel for the diaphragm pressure plate. The older long style has 3 x 2bolt pattern, diaphragm equally spaced 6 bolt pattern. Some flywheels are drilled for both. Crane F238 valve lash is .022 from old Crane catalog:

[www.cranecams.com]



Edited 1 time(s). Last edit at 05/03/2018 09:42AM by mgb260.


ex-tyke
Graham Creswick
Chatham, Ontario, Canada
(990 posts)

Registered:
10/25/2007 11:17AM

Main British Car:
1976 MGB Ford 302

authors avatar
Re: ac ace with oldsmobile 215
Posted by: ex-tyke
Date: May 03, 2018 09:43AM

Hays clutches are now under the Edelbrock umbrella of companies - check out the Edelbrock website for photos and specs.
I did find two Hays clutches listed that are 10.5" dia, 1-1/8 x 10 spline diaphragm style...part numbers #85-100 and #85-103.
both are listed for GM (General Motors) applications.
[www.holley.com]

EDIT: Just reviewed the clutch specs and the 85-100 is a lighter duty version suitable for your application - the 85-103 is a heavier duty clutch with subsequent heavier pedal effort.
If there is a bolt pattern mis-match to your existing flywheel, and assuming you'll get the assembly balanced at some point, it's certainly possible to get the flywheel drilled for the new clutch.



Edited 2 time(s). Last edit at 05/03/2018 12:08PM by ex-tyke.

Goto Page: Previous12
Current Page: 2 of 2


Sorry, only registered users may post in this forum.