Search results for query: *

The lever is about 2" from centre of shaft to where it joins to kickdown rod.

I managed to get the car in the workshop for a few minutes today. It looks as though the kickdown operating arm is very slightly longer than I need for this application. With the throttle closed the kickdown lever is about 1/8" back from fully forward and at WOT the lever could still travel...

Approaching retirement with way too many projects part done so I paid a garage to change out the transmission. The mechanics seem really switched on and made a very good job of the linkage. I think they compared kick down actuating arms from 727 and 42RH and chose the better option. I need to...

What am I looking for when I drop the pan? I replaced the pan with a deeper aluminium unit when the transmission was installed less than 100 miles ago. I replaced the filter and fitted the Sonnax valves that allow the TC to fill in Park. Remaining fluid in the trans when I got it was dark red...

Thank you for the speedy and helpful replies. It did smell a bit... Kickdown linkage is rod all the way. Is it possible that this wasn't adjusted right when the transmission was installed and has caused the issue or more likely that the transmission was tired as purchased? The car has been...

Most of the fluid was drained for shipping before i got it but it didn't look too bad. It has new fluid in it now. What is most likely to be worn out?

I have finally installed a 42RH in place of my 727 and all seems well when driven in traffic at moderate throttle. Driving at about 50MPH I tried kickdown. It seemed to shift down but the engine revved very high without the anticipated surge forward - so much so that I was worried about the...

Does it have to be a carb? I'm seriously looking at a Holley Sniper 2 EFI for my Poly 318. Very little feedback on them other than installation instructions since the release this Summer so I'm hoping they might have fixed most of the issues the original had.

I think what I'm getting confused about here is difference between engine RPM and torque converter output RPM and how efficiently the torque converter is working as that changes. For the figures in my example to stack up there must be quite a bit more difference between input / output RPM at...

Thank you for a constructive reply. I think your breakdown aboveshows where part of the problem lies. People seize on a part of what you have written and flame you for it without trying to understand the whole question. What i'm getting into here is quite a complex topic. If I start a new...

Thank you for that. Sorry if my lack of understanding is frustrating but I'm finding it hard to work this out. Please try to be patient. Amongst other things I'm trying to work out the speeds to switch in overdrive and lockup automatically. In the above example it looks as though switching...

I was obviously assuming that the amount of slippage would be similar at a fixed speed and power between 2400RPM without overdrive and 1850RPM with overdrive. It looks as though I must have got this very wrong.

Let's ignore the lockup. So 2400RPM. No overdrive. No lockup. Presumably some slippage. Engage overdrive. Still no lockup. 1850RPM. I assumed much the same slippage. About 0.77:1 This suggests that either the gear ratio isn't 0.69:1 or that the slippage at 2400 is very different to that...

The figures I gave are both direct and without lockup. I assumed - perhaps wrongly - that the slippage at 2400RPM would be similar to slippage at 1850 rpm. Both travelling at about 70MPH on light throttle.

You are absolutely right. Of course lockup doesn't affect the gear ratio. If we ignore lockup in my figures the revs drop from 2400 to 1850 due to the overdrive gear ratio alone. This is about 0.77:1. I thought the gear ratio of the 418RH was 0.69:1. This didn't make sense. I then...

I obviously haven't explained very well. What i'm questioning is whether the gear ratio of the overdrive disregarding lockup should be 0.69:1 or whether the stated figure includes lockup.

I get that but I thought the gear ratio in the overdrive was 0.69:1 and that doesn't seem to be the case. It would be good to have that confirmed and know it's not extra slippage in this transmission.

Just checking figures for 46RH overdrive. 2400 RPM steady level driving. Switch in overdrive - 1850 RPM. This comes out at about 0.77:1 but the overdrive ratio is given as 0.69:1. Switch in lockup and RPM drops to 1650. 2400 to 1650 is a ratio of 0.68:1. Does the stated ratio include the...

One from over the pond: Lotus. Lots of trouble, usually serious. And for Lucas, who made most of the electrical gear back in the day: Loose unsoldered connectors and splices.

I have done a bit more research on the vacuum switches PATC supplies Superior Products switch KO58 6 to 22 ins vacuum Superior Transmission Parts offer KO52, 1 to 6 inches of vacuum for GM and KO58 for Chrysler, so it looks as though 6 to 22 is the required range. By my calculations this...

I just found a switch on Ebay that could be what you need. Item 355035872117 1/4 1/8 Adjustable Vacuum Negative Air Pressure Switch Vacuum Pressure Switch | eBay

I have spent hours looking for other vacuum switches and not come up with anything cheaper or better. I found a couple of other places selling the switches for about the same cost. I think there are two different models that adjust over different ranges so it may be worth calling PATC to make...

It's a Salisbury rear axle so a 3.31 ratio may be the next best option.

Thank you for taking the time to give such full replies. I really appreciate the constructive answers. I wish I understood enough to ask the right questions. MopaR&D is bang on. That's exactly what I'm asking. In stock form with the original 727 with 2000 stall the car was returning 20 MPG...

It looks as though you would know this size as 27 x 7 15". In the land of UK we are still caught between imperial and metric. Timber would be bought as 4.2 metres of 4 x 2. Like your 2 x 4 but lying down...

Not sure what your question is but this is a European size. It's an 80% profile

That's a relief! I have just discovered that the original 727 converter was 2:1 and original engine delivered max torque at 2800RPM. I have read that stall should be about 500 to 700RPM below max torque so I seem to be on the money. The engine now has a very slightly hotter cam than original...

Upgrade from 727 to 42RH is nearly there. I have found out that the stall of the converter currently fitted to my 42RH is 2300. The car is geared for 130MPH at 5000 RPM, so 26MPH per 1000, 2000RPM at 52MPH. If overdrive comes in at 55MPH and lockup around 65MPH, then driving on main roads at...

I had to remove a bit more than expected but the starter is now fitted

When the switches are open they have 12V from the supply through the solenoids to one side of the switch and the other side of the switch is grounded. Therefore they light up. When closed both sides of the switch are grounded so the light goes out.