Author Topic: Finally got a good smokin in (Read 4029 times)

jimfoo · « **on:** August 22, 2007, 09:50:08 am »

Most of the time I can't really tell if people are trying to beat me in their cars as I fly ahead of them at lights :lol: , but this time even my wife thought this guy was trying. Started at a stoplight with a double turn going up a slight hill. An FJ Cruiser pulled up to me on the inside. Light turns green, I get going, shift into 2nd and he is a bit behind me, but I let off the throttle and he catches up. As I let him get a little ahead,I shift to 3rd and floor it and walk right on by. HAHAHA Getting passed by a 41 year old truck with a smaller displacement engine than it came with. Bet I could whoop him off road too. :twisted:

foxracer1 · « **Reply #1 on:** August 22, 2007, 05:00:32 pm »

How is it runnin? Haven't heard in a while.

jimfoo · « **Reply #2 on:** August 22, 2007, 08:26:15 pm »

Running good, but still gets hot on long steep hills/passes especially when it's hot outside. I'm faster than most of the v8 Rovers, but maybe not the new supercharged 300hp one.

jtanguay · « **Reply #3 on:** August 23, 2007, 12:50:30 am »

well isn't the rover much heavier than chassis the engine was meant for?

hmmmm still it would be like towing something... you have a huge radiator & oil cooler right?

do you have the stock oil 'cooler' still?

with all that i find it hard to believe that it is still overheating. i would suspect the thermostat, and maybe even a lack of ducting to get air circulating through the rad properly. (fan's can only do so much)

very cool though whoopin people!!! you're running the VNT-15 right? very sweet!!! that small turbo may be the reason you're running hot too. switch to bigger turbo & you get less back pressure and cooler EGT's. do you have an EGT gauge? what kind of temps do you see?

Diesel Superiority!

lord_verminaard · « **Reply #4 on:** August 23, 2007, 09:15:17 am »

Yeah, something still sounds fishy to me with the overheating. Replace the thermo and drill a small hole in the "flat" next to the valve to let air/steam/coolant pass, the thermo will still operate like normal but the engine should run cooler overall.

I mean, yeah, it's heavier and there is more load but the VW diesels just don't produce much heat....

Brendan

jimfoo · « **Reply #5 on:** August 23, 2007, 11:01:53 am »

I tested the stat prior to putting it back in. In fact, I think I had replaced it at one time as the original had rubber around the plate that moves which was peeling off unevenly. But eventually I put that one back in, but took all the rubber off, leaving a bunch of very small holes. I even modified it so that it would close the internal passage off sooner, but it didn't help much. I have a somewhat larger rad than I did, 21x18x2 if I remember right, have a fan shroud and a 4000 CFM fan. IC is in front of the rad as there is no where else to put it. I have 2 oil coolers behind the rad, between it and the fan so they also get good airflow. Vehicle weight is 3500 with the aerodynamics of a brick. 2.5" exhaust, VNT17. I did notice once when the turbo linkage came apart and the vanes closed all the way that it got hot on flat highway at 65, like 230 degrees. Air temp in the 90's that day. EGT's were still ok at that time. When it gets hot on the hills, the EGT's can get to 1400, or maybe more, but that's all I will put up with. Can a poor spray pattern cause such problems? I haven't worked on the injectors any. I don't have any visable smoke except when I first start out or really bog the engine, and I think that's a result of me having done the intermediate spring mod. Guess I could try a different stat, especially with all the high temps I've run at. I have never seen any bubbles in the overflow. I am running an open system with the Evans, so it can't build pressure, but that doesn't matter since it doesn't boil.

jimfoo · « **Reply #6 on:** August 23, 2007, 11:13:17 am »

Quote from: "jtanguay"

very cool though whoopin people!!! you're running the VNT-15 right? very sweet!!! that small turbo may be the reason you're running hot too. switch to bigger turbo & you get less back pressure and cooler EGT's. do you have an EGT gauge? what kind of temps do you see?

Diesel Superiority!

BTW, the 15 and 17 seem the same on the exhaust side as I can swap either into the others exhaust scroll, and they look exactly the same. So you are saying I might need a 20? I used to be able to easily get to 1200 post turbo(my gauge is pre now) with the k14. I would have to let off or it would just keep climbing. My timing is somewhere around 1.04. Could changing the cam timing slightly lower my temps any? One other thing is that the humidity is usually fairly low up here and the air is thinner, so less heat capacity for the air to cool, especially at 12000' on a pass.

Slave2School · « **Reply #7 on:** August 23, 2007, 11:31:20 am »

Put in a 1.6TD cam and see what happens. It apears to have a bit more duration.

jimfoo · « **Reply #8 on:** August 23, 2007, 11:40:45 am »

Do you know the specs on it? I have a spare 1.9 head and cam and could probably get it reground if I can't find a 1.6 cam around here. It seems like the vast majority of overheating problems seem to be with the 1.9s, so there must be something wrong or different about their design IMHO.

Slave2School · « **Reply #9 on:** August 23, 2007, 12:27:19 pm »

935 racer uses teh 1.6TD cam as a base for his regrinds, so I don't think it alone will be an issue as far as clearence etc goes. Of course if you can afford it one of his cams would be best.

jtanguay · « **Reply #10 on:** August 28, 2007, 12:07:35 pm »

how big is your downpipe? a VNT-20 might be good for you, but there will most likely be a little lag down low.

jimfoo · « **Reply #11 on:** August 28, 2007, 03:32:48 pm »

2.5" all the way.