Thread: Sitec's 101..

The pedal box and old servo has been removed.. the servo being consigned to the 'never be fitted again' shelf, and the pedal box re drilled to accept the Disco unit. Now, before anyone says anything about bolts pulling out etc... It won't happen!! Material thickness is the same as it was on the Disco bulkhead and the bolts r next to a fold and not out on the end of a flexible tab like they were.. which incidentally were bent about 10mm out of place!! (Must have stood on the brakes once or twice!!)

Here's a pic of the servo input rod, modified to suit the 101 pedal. The hole is an M10, but had to be approx 10mm further out. Pressure is inwards so the new plate is pushing into the original jaw.

Here's the newly modified servo mounted on the pedal box. It all dropped in nicely.

Before I could do any more, it was time to rebuild the Master Cylinder.. So here it is in bits, being cleaned/honed and inspected. Thanks to AJ in MLB, a new seal kit arrived a few weeks ago, along with a phone call with advise on the delicate bits etc, so this morning was spent stripping, cleaning and laying all the parts out as they came apart so I could compare them to the bits in the kit. A little pressed steel washer confused me for a while... but I located where it had to go and spent about 10 min cursing it when fitting it (the tiny spring valve to the left of the pic).. Anyway, with the aid of some very hot soapy water, the seals were all fitted unscathed and the cylinder re assembled. (This was after a few 'technical' mods with the grinder)!

This avo will be spent refitting the pedal box properly. Had a trial fit this morn to make sure it actually fits.. It does! More to follow later!

I'm keen to see the master cylinder mods to make it fit the booster.

Some of the conversions to type 50 servo's I've seen on the UK forum cut the lugs off the end of the pedal so that the new booster can hook straight up. The pedal sits in a slightly different position as a result, I cant recall if its further in or out for the type 50 booster.

I'm also interested to see when you fit it back up under the dash. The booster looks huge in comparison to the standard one.

Despite the look of the D1 booster, it fits without too much drama. I'm still waiting on my mate to do the machining I wanted done, but of course paying jobs take priority, so nothing yet. I'll probably have to put the old one back in for now and do it after Melrose unfortunately.

The 'grinder' mod to the master cylinder is still one thing I'm not so keen on, without something supporting it. I'm probably being paranoid, but there isn't much meat left where it needs to mount on the new booster. This was the main part I was waiting on my mate to make - a brace that ensures more support further in towards the original mounting location.

Have you guys thought of using a hydro boost setup rather than Vacuum booster, much more power and more compact. runs of power steering pump pressure. Hot rod guys use them when space is limited, as found on chev suburban F250 etc