Camshaft - how bad?

[kris812]

Thanks for the help guys. New cam is in, it was a little touch and go in the first 10 seconds after start up during the break-in process but then smoothed out. Might pull apart the top end to inspect in a month to see if theres anything wrong but other wise ill just keep driving.

I got the old one out, it was much more apparent there was a lot more wear. If i have to do this again, it wont feel so daunting.

Hey is there any chance you have a picture of the old cam and new cam so we can compare? I'm curious how much "lift" was lost on the lobes!

But we're ALL glad you got it swapped out! And I'm envious

 

[LRDONE]

Hey is there any chance you have a picture of the old cam and new cam so we can compare? I'm curious how much "lift" was lost on the lobes!

But we're ALL glad you got it swapped out! And I'm envious

This is how much lobe was off of mine. It still idled and drove normally until higher rpm. You can compare the worn lobe with a good lobe higher up in the picture.

 

[terryjm1]

Do NOT check your pressures, let's just assume and not break something working!

But I'm going to guess here in hotter ambient temps it doesn't work as well as the pressures will be higher, thus turning the compressor off sooner, less dV across the evaporator, warmer air.

But this is theory's here. It's possible I am undercharged, never cycling and not getting full cooling.. Filling AC per Rave and LR is per weight of r134, not pressures. I haven't weighed in, I just filled up per r134 charts.

To note, idle speed is 950 with or without AC. Little bog whenever first turned on.

You could use the defroster relay to trigger the AC relay like the factory, but I see NO problem in the way it's wired!

And the fact it's YOUR Rover forever, the more mods the better!

I filled it from empty and just went with the amount of Freon specified. I did use the gauges and don’t recall anything unusual. I also put a thermometer in a vent and was pleased with how cool it was but cannot recall the temperature. Yep, it cools very well so I’m going to leave it be regardless of what the gauges may indicate. Its been good for years.

 

[Disco95]

I filled it from empty and just went with the amount of Freon specified. I did use the gauges and don’t recall anything unusual. I also put a thermometer in a vent and was pleased with how cool it was but cannot recall the temperature. Yep, it cools very well so I’m going to leave it be regardless of what the gauges may indicate. Its been good for years.

FWIW our compressor cycles quite a bit and also cools fine. The truck does have one condenser fan out, but we only use AC on the highway so don't think that would matter. Keep meaning to get one of those Corolla fan motors that fits, but then summer ends! I haven't put gauges to it yet--haven't needed to!

Cheers,
joe b
pdx or
95 D1 v8 5-speed 200k

 

[Greg_M]

Keep meaning to get one of those Corolla fan motors that fits, but then summer ends!

They're getting harder to source. Do it while you can.

 

[robbyb20]

Hey is there any chance you have a picture of the old cam and new cam so we can compare? I'm curious how much "lift" was lost on the lobes!

But we're ALL glad you got it swapped out! And I'm envious

They werent all this bad but it wasnt great. The rest ranged from the furthest (worst) to the closest (best) and everything in between. Its a nice difference in the way it drives. And hell, if I fucked up the break in process, well at least I know how to do it and can give it another go. I dont have any of the new one I put in.