We're using a Sierra Type 9 gearbox courtesy of Eurospeed Motorsport. It's a close ratio 'box with a low range first plus a few other upgrades. We also went for the short shift lever which has a great action and finally couldn't resist adding a billet gear knob.
They have also supplied us with a lightened flywheel which is dwarfed by the original dual mass item. As a result our clutch slave cylinder needed bringing forwards on spacers which precipitated repeated assemblies and dismantling, but eventually we got it right. We also needed to widen the aperture in the bell housing with the trusty Dremmel to allow for the repositioned clutch hose and bleed pipe.
Hi ya..
ReplyDeletelooking good so far, just curious to how far forward you have to moved the clutch master clylinder.
Hi Matt - sorry for slow response and thanks for your comment. The short answer is I don't have the distance any more. As the lightened fly wheel is so thin the clutch pressure plate fingers no longer touched the thrust bearing using Birkins gear box cylinder mount. To compensate we added longer bolts with 4 alum sleaves between the cylinder mount and the gear box until the thrust plate engaged sufficiently. It was about 20 mm extra but easy to calculate using pressure plate to block against thrust plate to edge of Bell housing distances. Hope this helps and feel free to ask any other questions.
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