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Robin Hood S7 Rear Suspension

suspension Robin Hood S7 help

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18 replies to this topic

#1 njavis

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Posted 01 January 2013 - 10:55 PM

Hi All,

About 6 months ago i bought a half built S7, Since i have been reading that the S7 are more work to get a IVA Pass. I will have lots of question but i would be greatfull if someone would give me advice regarding the rear suspension. the guy who originally built the car put coil over suspension which is great but would you have a look at the attchd picture and give me your comments as im not sure it will pass IVA inspection.

Thanks in advance,
Nick

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#2 CMA

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Posted 01 January 2013 - 11:03 PM

I cant say if it will pass or not. But I can advise you read the IVA manual and read it again and again. It will state if suspension mounting points have to meet certain criteria or not. I would guess it is ok, but do not take my word for it, the manual should give you an answer.

There are others on here that have a similar car to yours and have got through SVA with that setup. But I'm not personally aware of any that have gone in for IVA yet. Someone will correct me if I'm wrong though.

(PS Update your location in your profile. You may have another S7 owner living very close who could come round and kick tyres and drink your tea and offer general support and things)

#3 Snapperpaul

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Posted 02 January 2013 - 07:43 AM

I passed SVA with the same setup
An S3 passed IVA last year with the same
An Exmo is going through middle of Jan
There is no issue with this as long as its all bolted up solid with thick load spreading washers on the other side

The 4 bolts you can see in the photo, the lower ones need larger load spreading washers
These are the U clamps for the roll bar
You also need plates under the bottom of the roll bar to prevent them pushing through in a crash
As you have a S7 the seat belts attach to the rear of the boot tub, these are to low, a simple fix is another roll bar tube welded across the rollbar higher up which the seat belts loop over, this makes the roll bar the effective seatbelt mount and as such needs to be securely mounted.

Now your head will start to spin with the required mods to pass IVA but its not difficult
You need to look at the rear seatbelt mounting height
The seatbelt fixing plates behind the seats
The steering column support
Dash bottom edge radius
Boxing in the passenger footwell
Sharp edges

Edited by Snapperpaul, 02 January 2013 - 07:53 AM.

665-neigbour of the Beast.

SVA passed first time 17th July 2008

#4 Peter Worrall

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Posted 02 January 2013 - 09:48 AM

ive had a series iii for fifteen years, looking at pic i would suggest you strenghten the top angle iron bracket with another bolted underneath, as they tend to bend up over time, it was one of the mods to do

#5 njavis

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Posted 02 January 2013 - 12:57 PM

Hi All,

Thanks for the comments so far, and thanks Snapperpaul your list is very helpfull. Does anyone have a workshop manual for the S7?

Thanks,
Nick

#6 njavis

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Posted 02 January 2013 - 02:15 PM

Hi,

Please can someone confirm which S7 my car is? looking at http://nw.rhocar.org...ntification.htm I think it is a series 2 but it could also be a series 3.

Thanks,
Nick

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#7 Snapperpaul

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Posted 02 January 2013 - 02:18 PM

Looks exactly like mine
S3
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#8 njavis

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Posted 02 January 2013 - 03:06 PM

Great thanks for the letting me know.

#9 njavis

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Posted 02 January 2013 - 03:15 PM

In the process of rebuilding my engine, nearly ready to fit just trying to decide which camshaft to use, I have been looking at the kentcam FR32 fast road. Does anyone have any experience with that cam or a better alternative?

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#10 njavis

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Posted 02 January 2013 - 03:16 PM

engine pic 2

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#11 njavis

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Posted 02 January 2013 - 03:17 PM

engine pic 3

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#12 steamer

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Posted 02 January 2013 - 04:22 PM

I ran with an Fr32.

A very popular cam and in my experience a very good cam!

#13 Snapperpaul

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Posted 03 January 2013 - 07:14 AM

I had( still have) an FR32 in an injection head on a 2.1 with bike carbs, 130bhp
It's a good easy on the road cam that will rev to 7500
The injection head is worth 5 to 10 bhp
The cam rated at +16bhp
The Pinto likes compression so at least fit a Rheinz gasket (1.27mm) or the Felpro this will give about 9.7 to 1, ideal would be 10.5 to 1

People tend not to understand that more camshaft duration means the inlet valve closes later so the piston is further up the bore before the mixture is compressed, this has the effect of lowering compression ratio, so you increase static comp ratio to compensate

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#14 Peter Worrall

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Posted 03 January 2013 - 11:51 AM

looking at pic of engine, have you a shortened sump, if not would suggest fit one before putting back in as ground clearance is very low on series 3

#15 njavis

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Posted 03 January 2013 - 12:59 PM

Thanks Snapperpaul for the info, my engine spec so far:

Standard 205 block from a low mileage Vehicle
Standard head which I have just had skimmed (to give a little more compression)
Felpro Head Gasket
Valves regrind/seated
New valve seals
New Newman camshaft followers
New Double Valve Springs

Twin 40 Dellorto carbs
Standard Sump
It will have a new Kent Cam FR32 (when I can afford it)





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