| Author | Message | ||
     Bill Bettridge (Billb) Dweb Lounge Member Username: Billb Post Number: 1250 Registered: 02-2002 |
Recently picked up a good "E" suffix LT230 really cheap - just had to output bearings in it. Anyway, since it is "E" suffix it does not have the crossdrilled FTC5087 input gear - though the existing splines are in perfect shape. I'm too cheap to go buy the revised gear, and want to just crosdrill mine. Does anyone see any issue with this - I'd drill in same location as stock and also use a bridgeport at very low speed so as to not screw up the heat treat on the gearset. Any issues I'm not thinking of?? Thanks, Bill | ||
| Rob Davison (Nosivad_bor) Dweb Lounge Member Username: Nosivad_bor Post Number: 1255 Registered: 02-2003 |
i figure they drill those before heat treat. now it's going to be really hard(Rockwell C 55-60) what kind of bit will you use? my gut instinct is that you are going to damage the gear but i have no experience with steel. rd | ||
| Ron Brown (Ron) Senior Member Username: Ron Post Number: 590 Registered: 04-2001 |
Why don't you just buy the $20 "flinger" it works just as well if there is no wear. Those gears are HARD if you can drill them more power to you but . . . Also is it 2in or 3in? That is the other difference as you might have to change the stub at the back of the trans to the other style if it does not match up. Ron | ||
| Bill Bettridge (Billb) Dweb Lounge Member Username: Billb Post Number: 1252 Registered: 02-2002 |
I can use a carbide end mill - that will drill through with no problems at all. Will also drill with coolant fluid. I thought about the flinger, but just though I'd try to do it for free first......maybe will still do though. The spline depth is the earlier 2" - but that will be no issue with the longer 3" splines on the trans tailshaft - going the other way would be an issue. Thanks for all the input so far. Ron - do you know how much the revised input gears costs?? Thanks, Bill Bill | ||
| Ron Brown (Ron) Senior Member Username: Ron Post Number: 593 Registered: 04-2001 |
Not sure how much the new ones are, I would drill that bad boy or put a flinger on it. You are right with the 2in/3in thing. I was thinking the other way around. Ron | ||
| Hendrik Behrmann (Hendrik) New Member Username: Hendrik Post Number: 17 Registered: 09-2003 |
BTW: There was an alternative built into the vehicles by Rover for a short period. Its an oil feed screen that replaces the rear PTO cover, catches oil and ducts it to the splines. Can be purchased by any Rover Dealer (dont know the P/N). BUT: About the spline length: I understand your input gear is the earlier type with the shorter splines that cannot engage the whole spline length of the gearbox-mainshaft. Why do you bother about modifying the old input gear, if the new one is that much cheaper than a gearbox mainshaft and replacement costs? Y´see I think (guts) that 50% more spline engagement will have a very good effect on spline wear. If you have a automatic gearbox then that is no issue (because 1) it shifts softer and the only time the splines hit against each other is shifting D <-> R and 2) the rear output shaft can be replacesd separately and 3) if a RRC the Transfer box will be filled with ATF Fluid that in contrast to the thicker EP90 even lubricates the splines without mods (seems to)) but wíth a manual gearbox - I think the (how much might the new gear be ? 50$ ??) new style input gear is a good investment. | ||
| Shaun Power (Shaunp) Member Username: Shaunp Post Number: 210 Registered: 05-2003 |
You can drill them easy. I've drilled a few. Drill 4 x 10mm (3/8) holes at right angles 1/2 way along the spool. Use a carbide drill and some drilling compound. | ||
| Bazzle (Bazzle) Member Username: Bazzle Post Number: 44 Registered: 09-2003 |
You can also try the other suggested method for all transfers on these, an extra 1/3rd pint of oil. Makes lube splash around more and weeps in to the splines. No need to drill and will help older boxes too. (saw that on Robinsons or BP some time back when all these probs arose) Bazzle |
