Daddylonglegs
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| posted on 15/9/08 at 10:42 AM |
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Shock Info
Any recommendations on poundage and shock/spring size for my car (+442 running 1.6 Pinto and Type 9 'box with Live axle rear)
I weigh in at a measly 210lb ( ) -- but am 6' 4" so carry it off really well 
JB
It looks like the Midget is winning at the moment......
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Surrey Dave
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| posted on 15/9/08 at 10:49 AM |
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I'll open the betting!!
Springs
275 lbs front
180 lbs rear
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Marcus
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| posted on 15/9/08 at 11:28 AM |
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sounds about right to me, although i went 225 front with a crossflow 
Marcus
Because kits are for girls!!
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omega 24 v6
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| posted on 15/9/08 at 12:27 PM |
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Having just done my 442 I've come to the conclusion that you SHOULD NOT guess at it.
Do a search as there are a couple of spreadsheets available for you to work it out for yourself. Or I'm sure there will be others more informed
than I who will be along to offer advice.
If it looks wrong it probably is wrong.
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mr henderson
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| posted on 15/9/08 at 03:52 PM |
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OK, well seeing as you are asking about shocks and springs I'll assume you have neither at the moment.
Best thing to do is to get the suspension assembled and the wheels and tyres on. Then jack the car up til it's at your required ride height.
Then make up some lengths of steel box to take the place of the shocks, and fit them.
If you are happy that the car looks right as is, then you can remove on of the dummy shocks and decide how much suspension movement you require, and
as you move the wheel up and down you can measure what the open and closed lengths of the shocks needs to be.
When you replace the dummy shock you will be able to measure how much the spring will be compressed by when fitted and at the standard ride height. By
now you have all the data needed to calulate the spring rate AND LENGTH that is needed.
My maths isn't up to caculating the required spring from that info, because the springs will be at an angle and soemwhat in from the actual
wheel, but I believe there was a thread on here recently with a couple of spreadsheets that will help.
I would say that most 7's are fitted with springs that are too stiff, OK for smooth race tracks where resisting roll is important, but not so
good for normal (bumpy) roads, so bear that in mind when making your choice.
John
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mr henderson
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| posted on 15/9/08 at 03:54 PM |
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Oh, BTW your post says 1.6 pinto, but your info panel says 1.6 OHV. OHV would usually be a crossflow, whereas the pinto would normally be described as
SOHC
John
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Daddylonglegs
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| posted on 15/9/08 at 06:33 PM |
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quote:
Originally posted by mr henderson
Oh, BTW your post says 1.6 pinto, but your info panel says 1.6 OHV. OHV would usually be a crossflow, whereas the pinto would normally be described as
SOHC
John
I think senility is setting, you are indeed correct it is a SOHC NOT OHV. Signature now amended.
Sorry for being stupid
And thanks John for the info, you are right, I have not got to the suspension mounting bit yet. That is my next move. I am just sourcing the steel,
bushes etc. for bones and trailing arms/panhard rod and also the mounting brackets.
JB
It looks like the Midget is winning at the moment......
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MikeCapon
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| posted on 16/9/08 at 08:51 AM |
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Spreadsheet for spring rate calcs
Here's a spreadsheet that will help you with the choice of rates.
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