Search found 518 matches

by Tom W
Sat Nov 07, 2020 9:27 am
Forum: Technical
Topic: Setting tickover with different camshafts - JAG4 from Guy Broad
Replies: 12
Views: 419
Great Britain

Re: Setting tickover with different camshafts - JAG4 from Guy Broad

If you can’t get any specs from the manufacturer or supplier, then you should be able to measure them fairly easily. You’ll need a timing wheel and a dial gauge. I believe timing and durations for aftermarket cams are usually quoted at .050” lift. I don’t know what the equivalent lift is for the fac...
by Tom W
Sat Oct 24, 2020 1:35 pm
Forum: Technical
Topic: electrical wiring
Replies: 7
Views: 502
Great Britain

Re: electrical wiring

Do any of the other ignition switched circuits work?
by Tom W
Sat Oct 24, 2020 6:21 am
Forum: Technical
Topic: electrical wiring
Replies: 7
Views: 502
Great Britain

Re: electrical wiring

What year is your car? Do you have points, or electronic ignition?

Are you saying you have power to the coil when the ignition is on, but none when the engine is cranking?
by Tom W
Thu Oct 22, 2020 9:00 am
Forum: Technical
Topic: Power graph and spec
Replies: 4
Views: 233
Great Britain

Re: Power graph and spec

Looks good, nice smooth curve.

There’s a whole tread somewhere on here with various rolling road graphs.

What 123 do you have, and what ignition curve are you using?
by Tom W
Sun Oct 18, 2020 7:34 am
Forum: Series 1
Topic: newb wondering what it takes to fit a V12
Replies: 10
Views: 584
Great Britain

Re: newb wondering what it takes to fit a V12

It has been done before. There’s at least 2 cars out there. One being the one owned by Jay Leno as already mentioned. The other being this https://petrolicious.com/articles/nicko-e-type In the blue car, it seems the exercise involves grafting the whole series 3 front end and bulkhead onto the SWB sh...
by Tom W
Thu Oct 08, 2020 9:31 am
Forum: General
Topic: Engine number
Replies: 25
Views: 972
Great Britain

Re: Engine number

What’s on the chassis plate?
by Tom W
Thu Oct 01, 2020 7:52 pm
Forum: Series 2
Topic: Photo required please
Replies: 13
Views: 687
Great Britain

Re: Photo required please

On my 1970 S2, they’re a textured black plastic. They’re secured with self tappers with screw cup washers. The texture is the same as the inserts for the door handle recesses.
by Tom W
Tue Sep 29, 2020 4:34 pm
Forum: General
Topic: Rev Counter and amplifier
Replies: 19
Views: 690
Great Britain

Re: Rev Counter and amplifier

Don’t forget the camshaft spins at half the speed of the engine. To display 1200rpm on the gauge only needs 600rpm input on the generator. With a 3000rpm drill, the tacho should read 6000rpm if everything is working correctly.
by Tom W
Fri Sep 25, 2020 5:55 am
Forum: Technical
Topic: IRS removal
Replies: 4
Views: 329
Great Britain

Re: IRS removal

Whether you can remove the rear radius arm bolt without removing the hub carrier from the lower wishbone depends on the age of the car. On the early type, the bolt goes from the outside of the car inward, so the hub carrier needs to be off to fit it. Some time in S2 production I think, the design wa...
by Tom W
Tue Sep 22, 2020 10:00 am
Forum: Technical
Topic: Am I overheating?
Replies: 68
Views: 3201
Great Britain

Re: Am I overheating?

If your header tank is empty, then that probably explains your overheating problems. The coolant will be bypassing the radiator matrix and only flowing through the right hand tank and back to the water pump.
by Tom W
Wed Sep 16, 2020 5:57 am
Forum: Technical
Topic: Which seal to use on sump gasket
Replies: 50
Views: 2066
Great Britain

Re: Which seal to use on sump gasket

For what it’s worth, my experience of removing the sump was on my 4.2 series 2. I removed the crank damper, but not the reaction plate. I did remove the cover plate that goes over the bottom of the bellhousing. My car was on very sagged engine mounts at the time, which didn’t help. I disconnected th...
by Tom W
Mon Sep 14, 2020 1:37 pm
Forum: Technical
Topic: Which seal to use on sump gasket
Replies: 50
Views: 2066
Great Britain

Re: Which seal to use on sump gasket

Whilst both can be done on axle stands, the balancer is easier to remove than the reaction plate. With the reaction plate removed, the sump can be offered up vertically, which should make getting the rear seal right easier. However, on axle stands, this might be a bit of a moot point as it’s a bit a...
by Tom W
Sun Sep 13, 2020 7:14 pm
Forum: Technical
Topic: Which seal to use on sump gasket
Replies: 50
Views: 2066
Great Britain

Re: Which seal to use on sump gasket

You needs a proper puller to remove the harmonic balancer. They’re not expensive.
by Tom W
Sat Sep 05, 2020 3:13 pm
Forum: Technical
Topic: Distributor and starting car updated
Replies: 17
Views: 961
Great Britain

Re: Distributor and starting car updated

Is your engine actually at TDC, measured with a dial gauge or similar? If it is, then adjust the pointer so it actually points toTDC. If it isn’t, then you need to establish exactly where TDC is, then adjust the pointer and cam timing to suit.
by Tom W
Fri Sep 04, 2020 5:54 pm
Forum: Technical
Topic: S2 4.2 L engine rebuild - any other things to consider at this time?
Replies: 8
Views: 482
Great Britain

Re: S2 4.2 L engine rebuild - any other things to consider at this time?

That paint’s really suffered. So far, my original factory frame paint is intact. Has that car been repainted? Maybe restored cars are more susceptible? There does seem to be a trend to apply far more paint now than ever seemed to be used originally, probably in search for a better finish than they e...
by Tom W
Fri Sep 04, 2020 5:06 pm
Forum: Series 1
Topic: Clutch/ engine / ? Problem
Replies: 41
Views: 3131
Great Britain

Re: Clutch/ engine / ? Problem

What was the idle speed before the engine was set up?
by Tom W
Fri Sep 04, 2020 5:00 pm
Forum: Technical
Topic: S2 4.2 L engine rebuild - any other things to consider at this time?
Replies: 8
Views: 482
Great Britain

Re: S2 4.2 L engine rebuild - any other things to consider at this time?

Updated oil pumps have greater flow than the standard pump, not greater pressure. It’s the pressure relief valve and the clearances on the bearings that will affect your oil pressure. An updated pump should give a bit more pressure around idle, but as soon as the relief valve opens the pressure is c...
by Tom W
Thu Sep 03, 2020 9:53 am
Forum: Technical
Topic: Saggy Rear Suspension Debacle
Replies: 18
Views: 889
Great Britain

Re: Saggy Rear Suspension Debacle

Yes, the accuracy of pattern parts are another matter. I re-used my original springs, so haven’t compared what’s available from the various suppliers.
by Tom W
Thu Sep 03, 2020 8:15 am
Forum: Technical
Topic: Saggy Rear Suspension Debacle
Replies: 18
Views: 889
Great Britain

Re: Saggy Rear Suspension Debacle

C25939 is suitable for all 6cyl models, provided they are used with the appropriate dampers, appropriate lower spring seats and without spacers. They were introduced part way through the Series 1 4.2. The data is in the spare parts bulletins.
by Tom W
Wed Sep 02, 2020 11:52 am
Forum: Technical
Topic: Saggy Rear Suspension Debacle
Replies: 18
Views: 889
Great Britain

Re: Saggy Rear Suspension Debacle

What springs and dampers do you have on at the moment? If you look through the parts books and spares bulletins, you’ll see there were several different combinations of springs, dampers and sometimes spacers specified over the years. The spec was all settled on by the time the Series 2 was introduce...