S2 #378 (Steve) - hopefully only light fixes

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Re: S2 #378 (Steve) - hopefully only light fixes

Postby 378S2 » Wed 17.08.2022, 01:10

TorqueHorse wrote:I also see a drop of fluid that might be coming from that joint


Oh dear - that's n=2 for the rebuild with the same o-rings not working so I think that has made my decision for me. I have rebuilt them again and they appear to be fine, but that was also the case last time.

Dave, thank you very much indeed for that link - there was not too much waffle for me at all. I've bought a pair of the Wildwood M10 versions (Part 260-12627), Amazon from the US they only cost ~$130AUD. My logic was that if I am going to replace the hard lines and valves, I might as well save ~$200AUD and have adjustable versions than go for the like-for-like SJS replacements. I am sure I can find a rolling road nearby and have them do the balancing for me. There were quite a few cheaper options from brands I didn’t know and no-brand copies of the Wilwood units (all avoided).

D57D7F1D-9063-471E-B948-6026726DDDAE.png
Delivered and with a discount I didn’t ask for but did accept, a pair of these were only $135AUD. They are the M10 versions.


I've put it all back on the car so it's hard to measure, but does anyone know off the top of their heads what the joints I will need on the replacement hard lines are? 3/16 pipe? What thread?
Last edited by 378S2 on Wed 17.08.2022, 09:29, edited 1 time in total.
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Re: S2 #378 (Steve) - hopefully only light fixes

Postby dapinky » Wed 17.08.2022, 09:27

George,

I didn't use the Wilwood ones, so I can only guess that the hard lines will be the same as I used for mine..... (but probably slightly different lengths/routing).

The pipe is standard 3/16 with a male double-flair, and standard metric M10x1mm fittings.
Dave

Just the one now, but this one's mine! - and it will be finished eventually.....

go on - click this link - you know you want to!
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Re: S2 #378 (Steve) - hopefully only light fixes

Postby 378S2 » Wed 17.08.2022, 09:30

It’s M10 on the Wilwood part too, so that’s easy.

Thanks Dave, your advice as always is just what I needed.
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Re: S2 #378 (Steve) - hopefully only light fixes

Postby 378S2 » Fri 19.08.2022, 10:05

Right then. I jumped a little deeper in to the rabbit hole, and have pulled out the specification of the Wildwood valve I have bought to compare to the OEM S2 (2/15) valves I am replacing.

IMG_430.png
Wildwood vs. OEM Gen 1, 2 and 3


Does anyone have a view if the the slightly higher pressure at high braking loads will make any difference? It’s hard to gauge if it would stand out from the 'noise' of stickier pad compounds, old sliders and all the otter factors that are variable.

(The Wildwood's are on order, but I will stump up more money if needed.)
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Re: S2 #378 (Steve) - hopefully only light fixes

Postby Tuga2112 » Mon 22.08.2022, 13:07

id be more conserned with the risk of it locking both rear wheels when at speed, you gotta take into account that with a tank low on fuel the only weight at the rear wheels is effectively some of yourself and the spare tire. (not much chassis back there)
1991 elan se
1991 elan se project
91 MR2 Turbo (import) project
94 Celica GT4 (Import)
94 4Runner
98 Celica SR

too many projects. not enough sunny days :(
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Re: S2 #378 (Steve) - hopefully only light fixes

Postby 378S2 » Mon 22.08.2022, 13:51

Hi Tuga,

Fair - I wasn't so clear in my question. The rears locking is what I'm asking about. I hadn't spotted when I bought the Wilwoods (https://shop.wilwood.com/blogs/news/how ... valve-work) that their response is ~57/43 above the knee, whereas the McGill's (https://www.mcgillmotorsport.com/img/shp/BPV-KNOB_S.pdf) that Dave suggested in his original post are closer to 70/30 and a better match for the OEM valves.

I don't want to waste my money buying another set if the difference is marginal compared to other variables but if it is going to be significant then I will.

If anyone has a bit more experience than I do I'd love to hear about it.
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Screen Shot 2022-08-22 at 8.47.25 pm Large Medium.jpeg
https://www.mcgillmotorsport.com/adjustable-brake-proportion-valve-knob-type-c-70-p-362
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Re: S2 #378 (Steve) - hopefully only light fixes

Postby 378S2 » Mon 12.09.2022, 14:51

I also asked on the Facebook page and found a couple of people using the Willwood valves without bursting in to flames, so that’s reassuring. The parts have all arrived now which coincided nicely with the driver’s side valve starting to leak again.

Some progress:
59687936-D659-4650-AA87-F26026B74F9B.jpeg
Made a mess on the workbench, and totally justified to myself the thousands of dollars I’ve ‘invested’ in tools over the years.

833995F1-C2BE-4BA9-8159-348B67DB29E0.jpeg
I’ve very carefully measured the plate so that the new input line is in the same spot as the one I’ve taken off. I don’t want to remake the complicated looking pipes upstream. This way I only need to make the short section downstream to the first rear flexible hose.

EA5EF4F5-C7DC-42E8-B1B6-3E6A67A1FAE6.jpeg
The old and the new. Should be a simple task to fit, unless I break one of the lines and wake the hounds of hell with my swearing.

The holes on the left are 6.5mm clearance holes for the M6 bolts to the subframe. I imagine I’ll keep enlarging those until they fit! On the right I’ve tapped them M6. The plate is 6mm thick which gives the correct stand-off from the frame. I ran out of M6 cap screws so can’t fit it tonight, I’ll need to track some down later in the week.

Update: I managed to collect some M6 stainless bolts on the way home:
A2E12651-EFF3-448E-A83A-20EB76954C5E.jpeg
Gone but not forgotten. There will be no public holiday for these regal stalwarts of my braking system.

46490BAF-77CE-422D-8ACA-A70738ACA4BF.jpeg
They both fit nicely. I did open out the 6.5mm clearance holes to (cough cough) 8mm (and I don’t recall the proper term for a clearance hole 1/3 bigger than the bolt) but otherwise a good fit that means I only have two short hard lines to fabricate.


Update2: One side done and holding pressure nicely. The other side I wasn't happy with, and when tested dutifully pissed fluid on the garage floor!

Update 3: all sorted, holding a firm pedal nicely. Will test drive in the morning with the maximum reduction (minimum rear bias) and see how it feels. Big thanks to Dave P for all the help.
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Re: S2 #378 (Steve) - hopefully only light fixes

Postby 378S2 » Sat 17.09.2022, 05:38

All buttoned up and working beautifully. I have to say the brakes are substantially better. I’m on the minimum rear bias setting but the pedal feel is much better and the nose doesn’t dip as much under heavy braking. So $140 + tools well spent.
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Re: S2 #378 (Steve) - hopefully only light fixes

Postby 378S2 » Fri 30.09.2022, 12:50

I will soon have nothing left to fix… but not yet.

My power steering rack is leaking from the driver’s side. Do you think it is the sort of thing I can find a good shop to do, or does it need to get boxed up and sent to SJS for overhaul? I’m not going to attempt it myself.

Is removal as terrible as it looks?

(Is anyone else unable to post photos?)
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Re: S2 #378 (Steve) - hopefully only light fixes

Postby chrism » Fri 30.09.2022, 13:09

Hi 378S2, thanks for sharing your 'light fixes' :) post. I recently shouted about an "uploaded file is empty," problem which meant I couldn't post pics.

It was fixed for a day or two and now has reverted - so you're not alone.

I gather someone can fix it who's a 'volunteer', and we must wait for them, but I'd personally like to know how to fix it myself (cos that's what we do, isn't it?...)

ps I still can't get my pics to 'stay'; you have to log on to see mine. What's your secret?
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Re: S2 #378 (Steve) - hopefully only light fixes

Postby Jamie N » Fri 30.09.2022, 13:34

chrism wrote:Hi 378S2, thanks for sharing your 'light fixes' :) post. I recently shouted about an "uploaded file is empty," problem which meant I couldn't post pics.

It was fixed for a day or two and now has reverted - so you're not alone.

I gather someone can fix it who's a 'volunteer', and we must wait for them, but I'd personally like to know how to fix it myself (cos that's what we do, isn't it?...)

ps I still can't get my pics to 'stay'; you have to log on to see mine. What's your secret?


Just use Imgur.... https://imgur.com/ , upload your pics to there, select 'BBCode', then click 'large thumbnail' and simply paste the link in your post and it will appear just like this, don't have to log in to view it either.
Image
Monaco S2 #406

https://youtu.be/MGiyiIFjUew Rubbery stuff.
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Re: S2 #378 (Steve) - hopefully only light fixes

Postby chrism » Fri 30.09.2022, 18:50

Brilliant... :D
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