parkiboy Posted May 9, 2017 Share Posted May 9, 2017 Hi I'm looking at buying my 4th glanza after 8 years without one.I am looking at getting a high powered one 270bhp+ because I'm 30 now even at this power insurance is cheap all mods declared.My question is how long are your gearboxes actually lasting at this sort of power? I have noticed gearboxes are a lot more expensive then they user to be due to them getting rarer. Last thing I want is to be swapping the gearbox every other month.Thanks Craig Quote Link to post Share on other sites
Socks Posted May 9, 2017 Share Posted May 9, 2017 280bhp. Very few people have had failures. Failures come when you start to run over 300bhp+. Its always 3rd gear. At that power level you can spin the wheels psychically coming on to boost and when it starts to bite traction is when the stress comes and you'll strip it. Quote Link to post Share on other sites
parkiboy Posted May 10, 2017 Author Share Posted May 10, 2017 Thank you for your comment, I might take the gamble then. Quote Link to post Share on other sites
Stu Posted May 10, 2017 Share Posted May 10, 2017 (edited) I'm unsure of the power output as I road/track tune and haven't been on the dyno yet, but my current gearbox has lasted 3 seasons of drag racing and a couple of circuit events (and some road driving) without any issues so far. Using 2nd gear to launch I'm consistently running 11.8 to 11.9 @ 120 to 121mph quarter mile times on 2.0-2.2 60fts. I currently use Redline lightweight shockproof oil but will likely swap to Penrite for next season. As per Socks comment, in third gear on street rubber it will haze the wheels as power comes on and chirp the wheels in 4th. The sudden load/unload/load will do it. Edited May 10, 2017 by Stu Quote Link to post Share on other sites
GP82 Posted May 16, 2017 Share Posted May 16, 2017 Good gearbox oil helps, I use Motul gear300 75w90. I observed this problem as you guys mention it's the sudden grip after wheelspin that will destroy the gearbox on high hp Starlet. So outright power that is delivered smoother without breaking traction and the gearbox can take way more. I setup boost by gear to eliminate breaking traction, it was all trial and error setting it up, but thought it might give the gearbox mechanical sympathy. Quote Link to post Share on other sites
akaye4000 Posted May 16, 2017 Share Posted May 16, 2017 Mine lasted 20 minutes on track once upping the power to above 300hp Quote Link to post Share on other sites
Stu Posted May 19, 2017 Share Posted May 19, 2017 What times are you running akaye4000? Quote Link to post Share on other sites
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