Galvanized frames and bulkheads? - Defender Source
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  #1  
Old April 14th, 2013, 08:04 PM
RoverC
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Cliff
1997 D90 ST
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Galvanized frames and bulkheads?

What is the consensus on the best frame replacement for a 97 ST?

Richards? any others?

What about Designa chassis? Their site says: "All the Designa Chassis are built and jig assembled in house with 3mm side rails (4 or 5mm also available) using computer designed machined parts."

What are the others and a stock LR frame?

Then of course, where best to get it from?


Then to bulkheads.
Is the RN one the only option or where do they get that from?

What is "galvaneal" anyway?
Can that be galvanized over or not needed?


Ive been building/restoring/modding this truck forever and never want to have to touch it again if possible, so Im thinking of doing this while its apart.

thanks
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  #2  
Old April 14th, 2013, 08:44 PM
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Usually your stock bulkhead can be rebuilt and galvanized. That saves a couple grand.
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  #3  
Old April 14th, 2013, 10:30 PM
Abu Buckwheat
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Malcolm
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I looked into galvanizing my chassis locally and that may be a much better alternative unless the original is just plain shot.
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  #4  
Old April 15th, 2013, 08:56 AM
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Paul Kennington
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Another option for bulkheads is epoxy treatment.

How bad are your current chassis & bulkhead?
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  #5  
Old April 19th, 2013, 04:35 PM
RoverC
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Cliff
1997 D90 ST
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Not real bad, but would like to do a side by side swap rather than take it all apart etc

So no one can recommend Designa over Richards over Marsland etc?

Who makes RN's?
The ones the Atlanta co sells?
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  #6  
Old April 19th, 2013, 04:38 PM
RoversNorth
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We sell Richards and Marsland.
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  #7  
Old April 19th, 2013, 04:50 PM
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Quote:
Originally Posted by RoverC View Post
What is "galvaneal" anyway?
Can that be galvanized over or not needed?
Galvanneal is superior to plain hot dip galvanizing. It's hot dip galv that has been annealed to perform diffusion bonding between the zinc and steel. The secret sauce is a composite oxide layer of manganese and phosphate. This creates a stable oxide coating which has superior paint adhesion compared to hot dip galvanizing.

I don't know if galvanneal can be re-dipped.
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  #8  
Old April 19th, 2013, 05:03 PM
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John Crouse
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Does anyone sell one that doesn't have that big hole in the back that the NAS trucks didn't have?
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  #9  
Old April 19th, 2013, 05:05 PM
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Apparently so.

RN does not list one for the 110, they do for the 90, but I have seen replacement NAS 110 frames with the NAS rear crossmember.
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  #10  
Old April 19th, 2013, 05:07 PM
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This one? http://landroverparts.roversnorth.co...VANIZED&key=it
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  #11  
Old April 19th, 2013, 05:22 PM
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Quote:
Originally Posted by sonoronos View Post
Galvanneal is superior to plain hot dip galvanizing. It's hot dip galv that has been annealed to perform diffusion bonding between the zinc and steel. The secret sauce is a composite oxide layer of manganese and phosphate. This creates a stable oxide coating which has superior paint adhesion compared to hot dip galvanizing.

I don't know if galvanneal can be re-dipped.
I called to inquire about galvanneal a few weeks ago and was told it is not as rust resistant as galvanizing. They recommended having the lower half of the bulkhead dipped to protect the footwells since I live on the east coast.
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  #12  
Old April 19th, 2013, 05:26 PM
RoverC
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Cliff
1997 D90 ST
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does that mean galvaneal doesnt need to be etched to paint?

I was thinking of putting Speedliner over the lower portions

------ Follow up post added April 19th, 2013 05:27 PM ------

was that RN that told you that or ?
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  #13  
Old April 19th, 2013, 06:02 PM
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Quote:
Originally Posted by RoverC View Post
does that mean galvaneal doesnt need to be etched to paint?

I was thinking of putting Speedliner over the lower portions

------ Follow up post added April 19th, 2013 05:27 PM ------

was that RN that told you that or ?
Yes, RN.
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  #14  
Old April 19th, 2013, 09:33 PM
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Mack Crouch
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I have a Richards chassis. No hole in the rear crossmember, and the quality of construction is very good.
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  #15  
Old April 24th, 2013, 03:27 PM
RoverC
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Cliff
1997 D90 ST
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I asked designa chassis if they could make a 5mm frame and even though they mention it on their site:http://www.designa-chassis.co.uk/chassis.asp
Heavy Duty 3mm Rails (4mm or 5mm rails also available)

They replied they could only make it in 3m as the chassis rails are too thick and do not allow for the chassis to flex

So why does it need to flex if the suspension is flexible?
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  #16  
Old April 24th, 2013, 03:31 PM
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Quote:
Originally Posted by Macker View Post
I have a Richards chassis. No hole in the rear crossmember, and the quality of construction is very good.
Same with mine...

We sell Richards and I've been very happy with the product, the packing, and the service. For bulkheads we sell Ashtree International - refurnished bulkheads. If yours is not totally done for it is better to repair and seal if possible. If not we have bulkheads in stock ready to repair and dip or seal. Sealing (Epoxy) means no warpage potential like a hot dip.
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  #17  
Old April 24th, 2013, 03:32 PM
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They are just lazy. The frame has minimal flex.
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  #18  
Old April 24th, 2013, 03:41 PM
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Quote:
Originally Posted by RoverC View Post
So why does it need to flex if the suspension is flexible?
Not so much a driving performance issue (suspension) as a longevity/structural issue IMO. If there is a moderate amount of elasticity in something like a frame, then the energy applied is modulated and dissipated instead of transferred directly to the tension areas. It's a balance between mass, rigidity, and flex to keep the weight bearing areas of the frame from developing stress fractures with use.
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  #19  
Old April 25th, 2013, 05:24 AM
griffman
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victor jones
1984 90 V8
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Quote:
Originally Posted by RoverC View Post
What is the consensus on the best frame replacement for a 97 ST?

Richards? any others?

What about Designa chassis? Their site says: "All the Designa Chassis are built and jig assembled in house with 3mm side rails (4 or 5mm also available) using computer designed machined parts."

What are the others and a stock LR frame?

Then of course, where best to get it from?


Then to bulkheads.
Is the RN one the only option or where do they get that from?

What is "galvaneal" anyway?
Can that be galvanized over or not needed?


Ive been building/restoring/modding this truck forever and never want to have to touch it again if possible, so Im thinking of doing this while its apart.

thanks
Get a Richards Chassis - they are made of thicker steel and they are the only supplier who supply the CORRECT rear crossmember for your model year and engine type - this is very important and will be more so in the future when classic car status is confirmed!

Ganvlanising is Zinc electro-plating - the frame will last for ever with this done.

I don't know about in the US but in UK and Europe a car with a galvanised frame is worth 30% more than one without!!!!!!
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