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-   -   Cam lope in cold weather? (http://www.hotrodders.com/forum/cam-lope-cold-weather-227295.html)

QParker 12-17-2012 11:18 PM

Cam lope in cold weather?
 
For those in the north (and FAR south), how do cams with a lope run in cold weather? Not just 20*, I'm talking the -30~-50 below we see in Alaska.
Motor will be a goodwrench 350, 8.5:1Cr, thumpr cam, 600 edelbrock, MSD ignition, in a chevy pickup with a 4spd.

How's the cold starts? I don't want to go to the grocery store and have it not start an hour later..
This is all assuming Its tuned up and running good of course.
I can say I do like the extra power @-30 below, if only I could get traction:rolleyes:

techinspector1 12-18-2012 12:11 AM

Quote:

Originally Posted by QParker (Post 1623999)
For those in the north (and FAR south), how do cams with a lope run in cold weather? Not just 20*, I'm talking the -30~-50 below we see in Alaska.
Motor will be a goodwrench 350, 8.5:1Cr, thumpr cam, 600 edelbrock, MSD ignition, in a chevy pickup with a 4spd.

How's the cold starts? I don't want to go to the grocery store and have it not start an hour later..
This is all assuming Its tuned up and running good of course.
I can say I do like the extra power @-30 below, if only I could get traction:rolleyes:

I suspect that once the motor is up to operating temp, it'll sound the same whether It's in Fairbanks or in Miami. The difference will be that in Fairbanks, you won't want to stand outside and listen to it for very long.

QParker 12-18-2012 01:19 AM

I'm sure it'll sound the same, but will it start? Will it stay running, without me having to rev it to 2k until it's warmed up? Is it going to pop right off, first crank like it did stock, or is it going to crank until the battery's dead, and need a shot of Ether to fire?

vinniekq2 12-18-2012 09:23 AM

fuel injection would be better.The lope sounds different with injection

Do you get carb icing up there? I had it a couple times in Vancouver.You should build a warm air box off the exhaust system

bygddy 12-18-2012 10:35 AM

With the amount of timing your going to have to run with a thmpr and 8.5 comp its not gonna wanna start anyways so the cold will likely help..... ;)

QParker 12-18-2012 03:50 PM

Ive personally never had ice up problems, but I like to run Heet in my rigs, which I think helps. I know that guys who run air gap intakes play hell in cold weather, fuel condenses, ect.
I had to run a water heated carb plenum on my airboat when it had an air gap intake, and that helped, but it was still cold blooded below about 50 degrees.

But none of that's a problem.
And I'm curious, how would cold weather Help it start?

69 widetrack 12-18-2012 05:26 PM

"Techinspector1" is correct. I have had a Firebird with a healthy cam and one time in Alberta we had a sudden temperature drop from +40's to -25 in just 12 hours...it was running higher compression but when it warmed up it was fine...the vehicle should start fine within an hour, it's when you leave it outside long enough for the oil to get thick is when you have something to worry about. If you plan on running the truck all winter, most definitely run synthetic..I usually never drove it in cold weather like that but I didn't have a choice this time.

bygddy 12-18-2012 08:45 PM

Quote:

Originally Posted by QParker (Post 1624170)
Ive personally never had ice up problems, but I like to run Heet in my rigs, which I think helps. I know that guys who run air gap intakes play hell in cold weather, fuel condenses, ect.
I had to run a water heated carb plenum on my airboat when it had an air gap intake, and that helped, but it was still cold blooded below about 50 degrees.

But none of that's a problem.
And I'm curious, how would cold weather Help it start?

I was mostly being a ********, I apologize....I had/have a thmpr cam, and it needed a bunch of timing to run decent, without an ignition interrupt or a start retard it won't wanna start when hot with a bunch of timing....easy fix, but just not a fan of the thmpr....

QParker 12-18-2012 09:40 PM

And here I was thinking about dynamic compression ratios vs the denser A/F charge, ect. :rolleyes:

Isn't more timing/less compression better than less timing/more compression, to an extent of course?
And would I be able to set my base timing low enough, then pick it up with my vac/mech advance?

QParker 12-18-2012 10:55 PM

Widetrack, I run 0w30 full synthetic and a quart of Lucas 'syrup' in the winter, and 15w40 with a quart of Lucas in the summer. STD oil pump, but I cleaned up the drains and smoothed out the inlet where the oil pump bolts on. 20#'s at idle, 65#'s max. I'm a born and raised Alaskan, and I've had plenty of experience with thick oil. I won't start an engine if the oil won't drip off the dip stick.
Not to mention I have two block heaters, a circulating heater, a pan heater and a trickle charger to make sure everything is up to the task in case I ever do have to leave it outside for an extended period of time.

69 widetrack 12-18-2012 11:28 PM

Being that you have experience with our northern climate and what's required to keep a car mobile in these cold conditions ...throw some 3 inch wood screws in the lugs on the tires, run an inner tube with a liner and have fun ice racing...It worked for my 10 speed 100cc Kawasaki...no reason it can't work on a truck...LOL.

You've got it covered...best of luck to you my friend...many people don't know what a block heater is, let alone a circulating one. The only two species of northern climate members of the human race that are tougher than a Canadian would be the Inuit and their dog sleds and people from Alaska.

The funny thing is, It's not to far from the truth. the coldest I've seen in Northern Saskatchewan was -48 Celsius...thank God my car was covered in snow or it would've never started.

Just off topic, but interesting, I remember my father in a cold spell in January one winter getting a roll of toilet paper, soaking it in kerosine and letting it slow burn under the oil pan until the oil got warm enough to turn the engine over.

Ray

QParker 12-19-2012 02:26 AM

I've got some Yupik in my blood, not nearly enough make me choose a dog team over my Polaris though:D

But back on subject, with the goodwrench heads I'm running, (Mexican't clones of 993's) with their 76cc chambers, how would using the set of 186 double humps be? Not only would they flow alot better, but with 64cc chambers, what would that do for my compression?

QParker 12-21-2012 01:06 AM

Would advancing the cam a couple degrees help make a little extra torque with my low compression?

vinniekq2 12-22-2012 08:38 PM

to answer your question,advancing a cam 2 degrees or retarding a cam 2 degrees can lower or raise the RPM range 2 or 300 rpm. Its usually done if the cam was not chosen correctly.

dinger 12-23-2012 01:39 AM

When I lived in Duluth, we had wind chills of -80 a few times. I had a 1000 watt tank heater, plugged it into my outside light, hit the switch in the morning about an hour before I left for work, it sounded like a percolator type of coffee pot. The car would spin over like it was summer time, heat coming out of the heater immediately. Best investment ever that year.


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