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Geo Hahn
Yoda
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Later this morning a friend will help me measure the bores in the TR3A. I believe these are original to the engine and though the mileage is unknown it is fair to say 'a lot'.
I'm expecting the results to present a compelling case for new liners & pistons.
It seems that 83, 86 & 87mmm sets are readily available so my question is: Is there any reason I would not got with a larger bore?
Are the larger bore liners more prone to overheating? I have never had an overheating issue in the past but do like to drive all year which means many 100° days.
Will I have to change the stock TR3A distributor to a TR4 distributor or can I get by with simply tuning (possibly less advance?) to get suitable performance?
Am I likely to need premium fuel if I go bigger (was always able to run regular in the engine before but that may have been because it was a bit worn).
I am not one to be overly concerned about performance but I do get to drive fast & far from time to time. Never felt underpowered with the stock engine but seems a shame to walk away from a chance for a little more grunt.
I'm aware of the 89mm sets but am not inclined to pursue that. I am not planning on changing the cam or doing any other performance enhancements, if that matters.
Thanks for any wise counsel.
I'm expecting the results to present a compelling case for new liners & pistons.
It seems that 83, 86 & 87mmm sets are readily available so my question is: Is there any reason I would not got with a larger bore?
Are the larger bore liners more prone to overheating? I have never had an overheating issue in the past but do like to drive all year which means many 100° days.
Will I have to change the stock TR3A distributor to a TR4 distributor or can I get by with simply tuning (possibly less advance?) to get suitable performance?
Am I likely to need premium fuel if I go bigger (was always able to run regular in the engine before but that may have been because it was a bit worn).
I am not one to be overly concerned about performance but I do get to drive fast & far from time to time. Never felt underpowered with the stock engine but seems a shame to walk away from a chance for a little more grunt.
I'm aware of the 89mm sets but am not inclined to pursue that. I am not planning on changing the cam or doing any other performance enhancements, if that matters.
Thanks for any wise counsel.
