|
|
Post by Stu on Nov 18, 2015 13:50:48 GMT
Does anyone know if you can use a torque convertor from a 1275 engine on a 998 engine?
|
|
|
|
Post by mra-minis on Nov 18, 2015 14:56:18 GMT
Does anyone know if you can use a torque convertor from a 1275 engine on a 998 engine? Nope nobody knows... ;-) You can, however depending on the year and model will depend on your stall speed, fitting a 1275 convertor from say an SPi will give you a very low stall speed and make getting off the line more difficult.... certainly trying to "blend" into traffic would or could be a challenge. Fit a 998 to a 1275 convertor and you get a higher stall speed and for the main part you may find it chirps off the line as the torque and stall point "come together" |
|
|
|
Post by notamini on Nov 18, 2015 17:11:23 GMT
Martin. I'm a bit confused. Do you mean that a 1275 SPI converter will be low and so on a 998 will be sluggish. And the reverse 998 TC on a 1275 will be hi and could chirp?
|
|
|
|
Post by Stu on Nov 18, 2015 17:22:28 GMT
We're assuming the 1275 and 998 TC's are spec'd different are we? This was what I was querying. If they are spec'd the same surely it wouldn't make any difference whether they go onto a 998 or 1275 ...... or am I being a bit dim here  |
|
|
|
Post by mra-minis on Nov 19, 2015 1:33:36 GMT
We're assuming the 1275 and 998 TC's are spec'd different are we? This was what I was querying. If they are spec'd the same surely it wouldn't make any difference whether they go onto a 998 or 1275 ...... or am I being a bit dim here That is correct ..... the torque convertor for a 998 is not always the same as that for a 1275, it depends on vehicle and or year, ie metro etc... but a basic rule of thumb is fit a 1275 convertor to a 1275 etc or you may get results you didn't want. The problem is that over the years so many different convertors have been fitted to so many different engine and vehicle configurations, then take into account that it's been a few years since the last production Mini rolled off the line which makes it even easier t have the wrong parts fitted. |
|
|
|
Post by simonw on Nov 25, 2015 7:13:37 GMT
When "accidentally" removing all 6 bolts , how does one tell if the the internal has indeed fallen off ?
I have returned 3 bolts successfully ... Have I dodged a bullet ?
|
|
|
|
Post by jockduck on Nov 25, 2015 22:26:16 GMT
If the internal plate falls inside then you won't pick up the threads then you are screwed. Yes you may have dodged the bullet but there may be a greater chance of an oil leak if the internal plate moved.
Jock
|
|
|
|
Post by limby2000 on Dec 24, 2015 18:24:52 GMT
When "accidentally" removing all 6 bolts , how does one tell if the the internal has indeed fallen off ? I have returned 3 bolts successfully ... Have I dodged a bullet ? I thought the issue was the seal breaking, not so much relocating threads. |
|
|
|
Post by mra-minis on Dec 25, 2015 14:20:09 GMT
Some convertors have shims fitted to correct the clearance, but not all, so in most cases if you can get the bolts back in to place then all should be ok, however tighten the bolts in several stages should maintain the integrity of the seal
|
|
|
|
Post by simonw on Aug 19, 2016 11:36:59 GMT
Some convertors have shims fitted to correct the clearance, but not all, so in most cases if you can get the bolts back in to place then all should be ok, however tighten the bolts in several stages should maintain the integrity of the seal Hi Martin I'm after a bit of advice . I have a 998 Australian minimatic. Is it possible to rebuild the torque converter for a higher stall speed ? The engine is being rebuilt for more performance .....was wondering whether anyone has built a box to match? Cheers Simon |
|
|
|
Post by mra-minis on Aug 19, 2016 12:27:22 GMT
I can be contacted on martin@kmprecisionengineering.com Hi Simon, The simple facts are yes the stall speed can be altered, it is a little costly, it depends on what cam you have, the higher duration the cam has the higher the stall speed required, turbo engines tend to require lower stall speed unless they have a race cam which requires an even higher stall speed than the N/A race engine. Higher (taller or faster) final drive ratios may also require a higher stall speed to allow the power to get up and go... Yes plenty of people have built "faster" boxes for the auto  some are on here as well. |
|
some are on here as well.