I'm looking at a 66 S Type that is more likely a parts car than one to refurb. I'm thinking most everything will fit my 67 340. Am I correct?

 

Many things are different, dash, independent rear end, seats, inside door handles and catches.
Some things are the same too, it depends what parts you're interested in ?
I would not use it as a parts car for a 340, too many things that won't fit.

Front suspension may be the same, but not sure, it may have the most desirable power assisted steering box on it _ some are more interchangeable then other, there's one that requires a "cut-out" in the lower cross member.

 

Hi Oxendine,
I agree with JeffR1. Basically the S-type from the B pillar forward is MKII/340. From the B pillar rearward is modified. Example the roof and rear window are different from the 340.

 

Wire wheels and hubs, power steering setup, gauges, etc are what I was referring to.

 

Rear door shells are different too.

 

Yes ~ The two cars are very different.. Don't try & mix & match. Many parts wont fit including the seats & door cards, inner door mechanisms, locks & frame profiles. You will end up with an ill fitting bitsa. While the S Type is based on the Mk2 loosely most things changed from from front bumper to rear bumper. A massive facelift & re-profiling as was Mk1 vs Mk2. Consider engine & gearbox as the same. Zero else although some parts are interchangeable. Even the scuttle is different on an S Type & reinforced with larger air duct & the S Type has 3 part sills vs Mk2/340 2 part. The windscreens, gauges, wiper motors & voltage regulators are the same and it really stops there. No major parts are interchangeable. Not even the front sub-frames. Many nuts and bolts yes. Rear suspension (IRS) vs semi elliptic spring & solid cart axle ~ I can go on for pages but you get the drift. Even bonnets/hoods changed in production. All lighting is different. Grill is different. If your car (340) has slim bumpers S Type front is the same as yours. Your rear bumper is unique.

So to answer your initial question. "I'm thinking most everything will fit my 67 340. Am I correct?"

No ~ it is a wrong assumption. Screen washer bottle same. Air/heater controls on your car cable operated. S Type vacuum operated. Even door handle push button clearances changed to stop freezing up in winter. Don't do it.

Sorry ~ best comparison I could find in my archives of flattened S Type roof & more upright rear screen vs Mk2 which changes the top of side window profile. They are not interchangeable. Also S Type has larger vertical stiffener fillet to keep top of frame tighter against top door rubbers. I'm highlighting 340 because some US 340's had Armco bumpers.

 

Do the S and Mk2 use the same rear wire hubs? That's something for the parts books. At first sight, this seems an expensive and inconvenient route to hubs, wheels, and a few instruments. However, if you have space and facilities for a car that's a non-driver and the time to break and sell off all that you don't want, it might work out well. Judging by the prices asked on eBay, most of our cars are worth far more as components than as a decent working car. The space issue has two sides: I have to admit that the pile of spare parts in my workshop occupies as much area as a car.

I don't think anyone buys an unrestorable for major body panels, patch pieces at best, so that aspect isn't particularly relevant. For mechanical parts, your 340 is the final version of the Mk2 and an S type of the previous year is unlikely to offer much in useful upgrades.

 

No ~ certainly not. Totally different & a bugger to shim on the S Type IRS. ~ this is just one side without Differential.. Both UJ's have covers with a plastic plug in a hole to grease. Covers are held on with jubilee clips. A complex piece of engineering.

IRS. Anti roll bar optional. All mounting points are provided on the S Type. This is an E Type picture to show all components. Pre XJ6 era came in 3 widths. MkX widest, S Type/420 intermediate, E Type narrowest.

 

I think Peter asking about the hubs on the rims, not on the car.
In other words, are the wire rims (wheels) interchangeable between the 2 cars ?

 

Sorry if I misunderstood. Both cars have 52mm splined hubs, 72 spoke wheels. Identical offset. 15" ~ 185 X 15 tyres standard on both.

 

I was thinking of the hub on the car, particularly the rear suspension. It's usually sold as a hub adapter in conversion kits. I think Jaguar splines are fairly standard across the range, though I have to admit to knowing very little about fitting wires. Somehow, spokes have never appealed to me. I appreciate that puts me in a minority of one.

 

Was there ever a rear roll bar for an S Type? The part number noted there is for an E Type, and the E Type and S Type have different width IRS ( there were 3 IRS widths in total), so an E Type bar would not fit an S Type.

 

Planning on looking at the S Type in the next few days. I realize I may be getting myself into a job but as a friend of mine says I seem to enjoy sharp sticks in my eyes!

 

There is a company that still makes them. Norman (JCS) on the Register is about to fit one. Not cheap. Available from Harvey Bailey Engineering in UK. The mounting points on the trailing arms & body are all already there. (at least on my car).

http://www.jagstyperegister.com/foru...sway+bar#p7593

 

Good luck ~ you are in for a big surprise. For the most things wont fit apart from those noted..

 

This is no simple bolt on adapter in the sense you mean it. It is a major component as shown in the diagram above. We had to make up a jig to set the hubs on my car which I went from solid to wires on. Thank heavens my friend still owned his state of the art workshop at the time before sale to Donaldson Filtration. Shimming the hubs is a difficult procedure. I bought one size larger in the end and stone rubbed it with cutting fluid to spec. See C20889 & C20890 in diagram. Remember I've actually done the job and it can get evil.

 

Are you referring to setting the bearing preload when you talk of shimming? It's the same procedure for either a disk or wire wheel hub on the rear. I converted my car from steel wheels to wire and didn't have any trouble setting up the hubs themselves.

The trouble started when I tried to put the wheel on. Turned out the splines were larger on the rear than the front, so I had to knock 0.010" off the diameter of the spine to get the wheel to fit. That was "fun" to do!

 

The shims on my car were so damn tight on the hubs to set the preload, Almost as though they should be heated before fitment. My splines were a perfect fit to MWS wheels. Maybe Barratts just supplied a particularly tight fit set to me. I was warned by club members that this could be a sod & it was. Probably Barratts supplier makes them a tight fit. The fronts were dead simple.

 

I have enhanced my comment on pre XJ6 3 different widths of IRS ~ see above. Thanks JB

 

I can't say that I've felt that any of the classic Jaguars were in need of increased roll stiffness in the rear suspension. They all seem nicely balanced. It would make sense if the front roll bar were significantly stiffened at the same time. A rear roll bar would be more useful for a Mk2.

Unused mounting points can arise for a number of reasons. A roll bar might have been considered in the design, but dropped during road testing. Components may be shared or were expected to be shared with other models. If a racing programme is in the mind of the designer, a (non-advertised) option can be valuable for future homologation.