suspension design tips etc

all your DIY needs
Post Reply
User avatar
MONTY
Datsun Dreamer
Posts: 155
Joined: Tue Jul 22, 2008 9:21 am
Location: Christchurch
Location: Pacing the house confused!! - chch

suspension design tips etc

Post by MONTY »

Hey Team, I've got to sort out the measurements etc for getting my coil overs made front and rear for my 180b (810)

As they have to get sent up north I need to let them know things like

Shock length
spring length
spring Lb
etc etc

and while I have some setup already they have been modified

Has anyone got or know how to do this properly as I only want to send them away once and at around $2500 I don't wana stuff it up

Any thoughts much appreciated :)

Lee
User avatar
DJZ
Datsun God
Posts: 2599
Joined: Mon Apr 05, 2010 6:56 pm
Location: Christchurch

Re: suspension design tips etc

Post by DJZ »

Wouldn't they determine the spring length and shock length when they build them?
Nissan 280ZX
Project thread
Other Nissan 280ZX
Project thread
User avatar
tlssunny
Financial Member
Posts: 724
Joined: Sun Jul 28, 2013 5:39 pm
aka: jesse
Location: rakaia
Contact:

Re: suspension design tips etc

Post by tlssunny »

no offence but isn't this like answering how long is a piece of string?

there are so many variences......................
what ride height do you want the car?
spring rate is somewhat determined about what you want the car to feel and ride like and how comfortable you want the ride.
what are the factory measurements?

I guess you are dealing with autolign??

need to do some research in my opinion
RDAP- Rakaia Datsun b310 Auto Parts
TLS- The Late Shift Restoration Services
User avatar
MONTY
Datsun Dreamer
Posts: 155
Joined: Tue Jul 22, 2008 9:21 am
Location: Christchurch
Location: Pacing the house confused!! - chch

suspension design tips etc

Post by MONTY »

Oops sorry guys I should put a bit more details in.

Was more looking for the right process (order) when measuring the piece of string (awesome analogy by the way)
Ie first find Spring rates (225 rear 250 front)
Then work out .....
Then work out .....

I have started the research but it's always good to check with the locals


Sent from my iPhone using Tapatalk
User avatar
DJZ
Datsun God
Posts: 2599
Joined: Mon Apr 05, 2010 6:56 pm
Location: Christchurch

Re: suspension design tips etc

Post by DJZ »

James (85_Z31) is your man for that kind of thing, I'm useless at it.
Nissan 280ZX
Project thread
Other Nissan 280ZX
Project thread
User avatar
denpal
Financial Member
Posts: 73
Joined: Sat Aug 22, 2009 1:22 pm
aka: denpal
Location: christchurch

Re: suspension design tips etc

Post by denpal »

MONTY wrote:Hey Team, I've got to sort out the measurements etc for getting my coil overs made front and rear for my 180b (810)

As they have to get sent up north I need to let them know things like

Shock length
spring length
spring Lb
etc etc

and while I have some setup already they have been modified

Has anyone got or know how to do this properly as I only want to send them away once and at around $2500 I don't wana stuff it up

Any thoughts much appreciated :)

Lee
You need to know your vehicle weight on each corner (with the driver) ideally. With coilovers ride height can be adjusted with the spring seat collar on the threaded strut tube sleeve so that's no big deal as long as you have a reasonable starting point. Your suspension guy should know how much droop to factor in (I assume you know what strut inserts you are using and their length) and spring rates depending on what you are doing with the car. It would be a good idea to try and find someone who has done exactly what you want to do, learn from their mistakes! Good luck.
Post Reply