mating the jaguar aj30 v6 to the rx8 gearbox
Discussion
The adaptor plate maker will probably be able to help but off the top of my head I would say that you will end up using the Jag flywheel and clutch cover and the RX8 plate if it is of the correct diameter. The spline is 23 x 1" IIRC so there are multitudes of clutch plates available. If I was making the adaptor plate I would include a mounting for the Jag starter in it. Maybe yours will.
Gearbox ratios will be fine. Fifth is direct and sixth is an overdrive. The only issue is that first is a little low. Second gear onwards are nicely (closely) spaced. A lot will depend on your choice of final drive ratio and tyre size. I have the IS200 version of the AZ6 in my car. Its a lovely gearbox.
From the net...
1st --- 3.760
2nd --- 2.269
3rd --- 1.645
4th --- 1.187
5th --- 1.000
6th --- 0.843
Reverse-- 3.564
From the net...
1st --- 3.760
2nd --- 2.269
3rd --- 1.645
4th --- 1.187
5th --- 1.000
6th --- 0.843
Reverse-- 3.564
spyder dryver said:
The adaptor plate maker will probably be able to help but off the top of my head I would say that you will end up using the Jag flywheel and clutch cover and the RX8 plate if it is of the correct diameter. The spline is 23 x 1" IIRC so there are multitudes of clutch plates available. If I was making the adaptor plate I would include a mounting for the Jag starter in it. Maybe yours will.
I was told the Sierra clutch plate. The Duratec st220 flywheel and pressure plate and pinto starter.but he was 100% sure. spyder dryver said:
Gearbox ratios will be fine. Fifth is direct and sixth is an overdrive. The only issue is that first is a little low. Second gear onwards are nicely (closely) spaced. A lot will depend on your choice of final drive ratio and tyre size. I have the IS200 version of the AZ6 in my car. Its a lovely gearbox.
From the net...
1st --- 3.760
2nd --- 2.269
3rd --- 1.645
4th --- 1.187
5th --- 1.000
6th --- 0.843
Reverse-- 3.564
thanks was starting to think it would be the wrong gearbox From the net...
1st --- 3.760
2nd --- 2.269
3rd --- 1.645
4th --- 1.187
5th --- 1.000
6th --- 0.843
Reverse-- 3.564
I have one of Freddys adaptor plates and although I have not installed the Jaguar Rx8 combo this is how I am sorting out the Flywheel/ clutch dilemma. I have a Mondeo ST200 flywheel and clutch, the clutch fits perfectly on the RX8 splines. The flywheel itself is a different problem and there are three options;
1 Jaguar S type dual mass, I have no idea if the Mondeo clutch or plate will fit this flywheel and it is heavy
2 Custom billet flywheel, a bit too spendy for me!
3 Get a flex plate from an auto S type, then remove the ring gear, about 8 short welds hold it on. In a lathe turn the flywheel down to accept the ring gear from the S type, lighten and balance. I was quoted £180 + £20 for the ring gear off ebay. The other point to bear in mind is that the ring gear needs moving about 5mm further away from the block when fitted to the Mondeo flywheel. You will now have a flywheel that weighs at least 10 lbs less than the dual mass and accepts regular easy to obtain (ie cheap) clutches.
One word of warning is that some flywheel specialists say that welding the ring gear to the flex plate distorts it off round, others have said not correct or very minimal and the ring gear can be machined round if needed.
The gear ratios have no bearing as to what speeds are achieved in each gear, remember that the top 5 gears in a six speed Rx8 gearbox are virtually the same as a T9 ., its the diff ratio that adjusts that, hence 4.4 in a RX8
1 Jaguar S type dual mass, I have no idea if the Mondeo clutch or plate will fit this flywheel and it is heavy
2 Custom billet flywheel, a bit too spendy for me!
3 Get a flex plate from an auto S type, then remove the ring gear, about 8 short welds hold it on. In a lathe turn the flywheel down to accept the ring gear from the S type, lighten and balance. I was quoted £180 + £20 for the ring gear off ebay. The other point to bear in mind is that the ring gear needs moving about 5mm further away from the block when fitted to the Mondeo flywheel. You will now have a flywheel that weighs at least 10 lbs less than the dual mass and accepts regular easy to obtain (ie cheap) clutches.
One word of warning is that some flywheel specialists say that welding the ring gear to the flex plate distorts it off round, others have said not correct or very minimal and the ring gear can be machined round if needed.
The gear ratios have no bearing as to what speeds are achieved in each gear, remember that the top 5 gears in a six speed Rx8 gearbox are virtually the same as a T9 ., its the diff ratio that adjusts that, hence 4.4 in a RX8
Regarding the "warped due to welding" ring gear, I'd not worry about that at all having used ring gears on custom machined billet aluminium flywheels many times, there is a "trick" though.
Under no circumstances machine the ring gear 1, carefully clean off all of the weld
2, measure the inside diamete of the ring gear in a dozen evenly spaced places then average the different numbers to arrive at the correct flywheel diameter,
3, add a small margin for a strong shrink fit,
4, machine a nice tapered lead on the flywheel,
5, using a measured hand and a propane flame heat the ring gear till it drops onto the flywheel and sits hard against the shoulder.
6, Allow the parts to cool naturally, do not quench.
Then watch as the ring gear is stretched true around the flywheel, as the ring gear will have been machined true during manufacture any machining to remove the warpage will result in weird imbalances, & gear runout, stretching the gear around a true flywheel will bring it back to it's original shape.
I must have done this a hundred times and have even seen ring gears cut and welded to a smaller size, I once saw two gears cut and welded to make a larger size these worked well but I wouldn't recommend the process as:
1, it's just so very risky and,
2, it's not that hard to cut new gear teeth into a billet flywheel if you really need a custom size, which is what I'm doing later on tonight.
Under no circumstances machine the ring gear 1, carefully clean off all of the weld
2, measure the inside diamete of the ring gear in a dozen evenly spaced places then average the different numbers to arrive at the correct flywheel diameter,
3, add a small margin for a strong shrink fit,
4, machine a nice tapered lead on the flywheel,
5, using a measured hand and a propane flame heat the ring gear till it drops onto the flywheel and sits hard against the shoulder.
6, Allow the parts to cool naturally, do not quench.
Then watch as the ring gear is stretched true around the flywheel, as the ring gear will have been machined true during manufacture any machining to remove the warpage will result in weird imbalances, & gear runout, stretching the gear around a true flywheel will bring it back to it's original shape.
I must have done this a hundred times and have even seen ring gears cut and welded to a smaller size, I once saw two gears cut and welded to make a larger size these worked well but I wouldn't recommend the process as:
1, it's just so very risky and,
2, it's not that hard to cut new gear teeth into a billet flywheel if you really need a custom size, which is what I'm doing later on tonight.
Blaxlinde said:
Regarding the "warped due to welding" ring gear, I'd not worry about that at all having used ring gears on custom machined billet aluminium flywheels many times, there is a "trick" though.
Under no circumstances machine the ring gear 1, carefully clean off all of the weld
2, measure the inside diamete of the ring gear in a dozen evenly spaced places then average the different numbers to arrive at the correct flywheel diameter,
3, add a small margin for a strong shrink fit,
4, machine a nice tapered lead on the flywheel,
5, using a measured hand and a propane flame heat the ring gear till it drops onto the flywheel and sits hard against the shoulder.
6, Allow the parts to cool naturally, do not quench.
Then watch as the ring gear is stretched true around the flywheel, as the ring gear will have been machined true during manufacture any machining to remove the warpage will result in weird imbalances, & gear runout, stretching the gear around a true flywheel will bring it back to it's original shape.
I must have done this a hundred times and have even seen ring gears cut and welded to a smaller size, I once saw two gears cut and welded to make a larger size these worked well but I wouldn't recommend the process as:
1, it's just so very risky and,
2, it's not that hard to cut new gear teeth into a billet flywheel if you really need a custom size, which is what I'm doing later on tonight.
^^^^^Under no circumstances machine the ring gear 1, carefully clean off all of the weld
2, measure the inside diamete of the ring gear in a dozen evenly spaced places then average the different numbers to arrive at the correct flywheel diameter,
3, add a small margin for a strong shrink fit,
4, machine a nice tapered lead on the flywheel,
5, using a measured hand and a propane flame heat the ring gear till it drops onto the flywheel and sits hard against the shoulder.
6, Allow the parts to cool naturally, do not quench.
Then watch as the ring gear is stretched true around the flywheel, as the ring gear will have been machined true during manufacture any machining to remove the warpage will result in weird imbalances, & gear runout, stretching the gear around a true flywheel will bring it back to it's original shape.
I must have done this a hundred times and have even seen ring gears cut and welded to a smaller size, I once saw two gears cut and welded to make a larger size these worked well but I wouldn't recommend the process as:
1, it's just so very risky and,
2, it's not that hard to cut new gear teeth into a billet flywheel if you really need a custom size, which is what I'm doing later on tonight.
Sounds very much like a guy who knows exactly what he's talking about..
The latest info regarding this conversion can be found here;
http://www.locostbuilders.co.uk/viewthread.php?tid...
What has been found is that there was a fault in the original plates, Freddy has replaced them with correct ones FOC. But the most usefull development is that by moving the starter mounting holes 4.25mm towards the flywheel almost any starter motor for Pinto or Zetec engines will bolt straight on AND mate to an unmodified Mondeo V6 flywheel. The ST200 is the lightest flywheel and can be lightened even more.
http://www.locostbuilders.co.uk/viewthread.php?tid...
What has been found is that there was a fault in the original plates, Freddy has replaced them with correct ones FOC. But the most usefull development is that by moving the starter mounting holes 4.25mm towards the flywheel almost any starter motor for Pinto or Zetec engines will bolt straight on AND mate to an unmodified Mondeo V6 flywheel. The ST200 is the lightest flywheel and can be lightened even more.
Spyder Dryver
5 speed ratios...
1st 3.483; 2nd 2.015; 3rd 1.391; 4th 1.000; 5th 0.; Final Drive 4.300
Those are the ratios quoted all over the internet but they are only correct for JDM cars all European cars had the following ratios;
1st 3.483; 2nd 2.015; 3rd 1.48; 4th 1.000; 5th 0.76;
I am gearing mine (3.31 diff) with 5th being a cruising gear
5 speed ratios...
1st 3.483; 2nd 2.015; 3rd 1.391; 4th 1.000; 5th 0.; Final Drive 4.300
Those are the ratios quoted all over the internet but they are only correct for JDM cars all European cars had the following ratios;
1st 3.483; 2nd 2.015; 3rd 1.48; 4th 1.000; 5th 0.76;
I am gearing mine (3.31 diff) with 5th being a cruising gear
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