Wolseley 6/90 revival
- Thread starter andrewrobertson
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- back car ls3 suspension wolseley
Hi all, small update, now with about 2500kms on it.
Have become obsessed with fine tuning - can't get it totally perfect at 1-2% throttle because very small changes have a major impact on airflow which cause pretty large dynamic changes in AFR, but it's pretty good overall. On the open road trips we've done so far we were getting 23mpg (imperial gallons).
Added a surge tank and lift pump to stop fuel starvation on turns when main tank was low. Works well but I'm hoping the carter rotary vane lift pump fails at some stage so I can replace it with something less noisy!
Under-bonnet temps were pretty high in stop/start and even at steady 100kph did not stabilise below about 40C. Have added a cold air tray and a small front splitter to train flow from the upper grill area up into the tray. Has dropped IAT down by about 10C to 30C, and usefully it takes a much shorter time to flush out a heat-soak condition from sitting in traffic once it is moving.
Hope all is well!
Cheers, Andrew
Have become obsessed with fine tuning - can't get it totally perfect at 1-2% throttle because very small changes have a major impact on airflow which cause pretty large dynamic changes in AFR, but it's pretty good overall. On the open road trips we've done so far we were getting 23mpg (imperial gallons).
Added a surge tank and lift pump to stop fuel starvation on turns when main tank was low. Works well but I'm hoping the carter rotary vane lift pump fails at some stage so I can replace it with something less noisy!
Under-bonnet temps were pretty high in stop/start and even at steady 100kph did not stabilise below about 40C. Have added a cold air tray and a small front splitter to train flow from the upper grill area up into the tray. Has dropped IAT down by about 10C to 30C, and usefully it takes a much shorter time to flush out a heat-soak condition from sitting in traffic once it is moving.
Hope all is well!
Cheers, Andrew
Hi, an update now with 8000kms on the car, and a question for any of you familiar with the Jag IRS.
Generally speaking its getting better and better as I work little bugs out. Steadily working on eliminating driveline vibration at higher speeds, and have had a CV drive flange and a CV stub axle made up for the driveshaft and Jag diff by Bettany Gears in Kapiti. I had over 4 degrees of working angle at the diff end which is now addressed by the CV, and now have a remaining 1.6 degree working angle at the front where I retain a standard UJ and yoke. I know around 0.5 degrees would be better at the front but that's as close as I can easily get. That has made a positive difference - it has raised the RPM where I get a pretty bad vibrating resonance with the car running up on stands, which now happens at about 95-105 mph then clears above that. Here are photos of the driveshaft mods.
When I was testing the impact of this change I spotted that I have pretty major runout on one of the halfshafts in the jag IRS.
I'm wondering if the donor car these parts are from has been hit in the rear wheel where that load would have been absorbed by the halfshaft. When I use a stethoscope there is more noise going on in the rear hub on the offending side than the one running true. I'm assuming I need to swap in a known good second hand replacement before I chase the remaining issue any further. Anyone ever come across this in a Jag rear?
Cheers, Andrew
Generally speaking its getting better and better as I work little bugs out. Steadily working on eliminating driveline vibration at higher speeds, and have had a CV drive flange and a CV stub axle made up for the driveshaft and Jag diff by Bettany Gears in Kapiti. I had over 4 degrees of working angle at the diff end which is now addressed by the CV, and now have a remaining 1.6 degree working angle at the front where I retain a standard UJ and yoke. I know around 0.5 degrees would be better at the front but that's as close as I can easily get. That has made a positive difference - it has raised the RPM where I get a pretty bad vibrating resonance with the car running up on stands, which now happens at about 95-105 mph then clears above that. Here are photos of the driveshaft mods.
When I was testing the impact of this change I spotted that I have pretty major runout on one of the halfshafts in the jag IRS.
I'm wondering if the donor car these parts are from has been hit in the rear wheel where that load would have been absorbed by the halfshaft. When I use a stethoscope there is more noise going on in the rear hub on the offending side than the one running true. I'm assuming I need to swap in a known good second hand replacement before I chase the remaining issue any further. Anyone ever come across this in a Jag rear?
Cheers, Andrew
flatchat(Chris)
Supporter
I reckon that the outer hub uni is failing or improperly assembled initially..
that amount of run out indicates a needle roller in one of the bearing caps has found its way to the end of the spider and forced off centre in assembly -- an autopsy will be necessary at least and be ready with a new uni to fix it
