breplica & anchaf3

Do either of you two guys have an idea of how long it took your installer to install the diff❓ My installer looked it up and says 15 hours I can't imagine it would take that long

Lou

 

2-3 hours tops for the install. If a guy tells you its 15 hours, find another mechanic

 

breplica - Did yours come with a fluid filler cap? Mine came with a piece of green tap over the fill hole

Lou

 

Looking at Javrabbit’s post above Link I see the green tape in his picture as well.

 

perhsps it uses the same cap you alreapy have?

 

You can click on the part numbers on the diagram on this page and it will scroll to the part and show the part number https://www.amayama.com/en/genuine-c...0/chassis/4101

looks like the part number for the filler plug and filler gasket are 9034118032 and 1215710010. I need to go order these too now.

 

Yes it does - But, why would I not want to replace the cap on my old diff. It's still worth something

Lou

 

Just talked to my Lexus parts contact - That's the way the diff is supposed to come from Lexus - sans the plug and gasket Very Strange IMO I ordered the parts from him for $8.22,

Lou

 

was waiting for these last few parts to come in. New cushion mounts, upper stoppers, bolts and filler plugs and gasket. Dealership installing next week (mod friendly dealer). After whatever break in period, I Plan to do a full comparison on youtube with dragy times, data logging, mpg test, seeing what mph the 2 diffs max out at for each gear, and if needed going into the stock tune to change what mph the car shifts at when in auto. Then of course just ripping through the gears on both setups to hear how much different it is having to shift more often.

 

I got mine installed this morning. breplica is correct; it's not a night and day difference. The regular driving feel is still the same. The car is more frisky. Neither I nor the LC is very good at drag starts. So, I did not measure 0-60. I did however, measure, with dragy, 60-100. Before the change I ran 6.25, after the change 5.95. My LC has a lightweight crank pulley, PPE headers, dual-mode exhaust, and lightweight Vossen wheels in addition to the new diff.

Lou

 

You think it’s worth the cost and effort?

 

^^^^Well, I guess you can tell the deff was not all I expected, but was it worth the cost and effort? For me, YES is was

Lou

 

Just got my car back the install was a success. I was told I have to take it easy for 1k miles so i’ll try to knock that out in a week so I can finish off the comparison youtube video. I went the route of dealership install for anyone wanting a rough estimate. I believe my dealership is 150 an hour. When buying the diff, the techs told me to buy an RC F “cushion mount” as well. Wasn't sure why until now. On the LC theres an unused hole on the passenger side for another cushion mount. (They did this on a previous LC not too long ago). So we replaced the small rubber dampener. Will post back when the vids done!

 

Posted my comparison on youtube. If you just want to know if it made any difference on my car i tested 45-120 and 60-130. 45-120 reduced by .46s and 60-130 reduced by .47s. Also roughly compared top speed for each gear and showed the mph difference. Then lastly showed rpm differences when cruising at 60, 65, 70, 75, 80 mph between the 2 diffs.

 

Maybe you folks have been reading about how hot it's been in Arizona Unlike Mr. Rabbit, When I first ran the diff, it was in the heat of a 115ºday and I believe that's why I was not impressed. High heat is not conducive to performance. Now we are in October, and while our temperatures are still setting records and are still in the triple digits I am noticing more vitality than previously When the temps moderate, I will try again I'm sure things will improve

Lou