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Sat Apr 12, 2008 1:09 pm

To all you folks running turbo chargers. Do you have any suggestions for keeping the suction side of intake from icing up.

Sat Apr 12, 2008 2:38 pm

Is it causing any problems...?

Sat Apr 12, 2008 2:52 pm

What format are you running.It won't cause any probs on blow-through efi.Draw-through carb might cause some driveability issues.

Sat Apr 12, 2008 2:59 pm

here's what I did on mine and I did this because I see this done back in the 70's.. It works..

use soft copper oil line,, wrap the line around the manifold, then hit the turbo..

Sat Apr 12, 2008 3:01 pm

Great idea. Interheated instead of intercooled. LOL

Sat Apr 12, 2008 6:42 pm

No ice with EFI, sorry can't help you. :twisted:
It shouldn't ice up for long though, the turbine side usually heat soaks the compressor after a little bit.

Sun Apr 13, 2008 6:59 am

The intake is icing up and causing running issues. if heat is applied to intake the motor runs good. I tried the copper tubing trick yesterday, slight help but not enough. The setup is custom using a turbo off a SAAB. I am using a Weber proggressive carb. I do not want the thing to be ugly when done but it sure seems to be getting that way. I am not sure how to post pictures but when I figure it out I will post one. If interested in seeing photo the vehicle is on Graigslist.com. Thanks for the input.

Jeff

Sun Apr 13, 2008 7:54 am

BugsnStuff wrote: The intake is icing up and causing running issues. if heat is applied to intake the motor runs good. I tried the copper tubing trick yesterday, slight help but not enough. The setup is custom using a turbo off a SAAB. I am using a Weber proggressive carb. I do not want the thing to be ugly when done but it sure seems to be getting that way. I am not sure how to post pictures but when I figure it out I will post one. If interested in seeing photo the vehicle is on Graigslist.com. Thanks for the input.

Jeff

Then you're going to have to add preheated air to in intake tract, like VW did.A 2" hose from a hot headr tube to the air horn should do it.Take if off after ambient temps go over 55 though.

Sun Apr 13, 2008 9:33 am

I would think that oil would take so long to warm up that the intake would warm up from the turbo first. Unless you wrap the entire intake with a sleeve (box it in with aluminum sheetmetal) and then run oil through it, which should keep a stable enough temp during warmup. Plus it acts like an oil cooler.

Quote: A 2" hose from a hot headr tube to the air horn should do it.

Hey, that'd be an easy to do a wastegate. You just won't get any boost. :wink:

Sun Apr 13, 2008 10:03 am

intake icing is a real problem on my current drawthrough.... gets below 60 degrees and it gets an attituded... my intake it threaded on both sides and has a "jacket" that oil can be run through...when cold out the turbo doesn't transmit enough heat to the intake to overtake the icing...

Sun Apr 13, 2008 2:27 pm

Move to were its warmer Problem solved :wink:

Sun Apr 13, 2008 6:17 pm

padex wrote: Move to were its warmer Problem solved :wink:

nah, got a better plan... larger engine, blow through EFI....need to order the heads, then mock it all up...

Sun Apr 13, 2008 9:00 pm

bugninva wrote: padex wrote: Move to were its warmer Problem solved :wink:

nah, got a better plan... larger engine, blow through EFI....need to order the heads, then mock it all up...

There ya go, problem solved. :D Hit me up if you wanna do an MS conversion, I just got done building my second one.

Sun Apr 13, 2008 9:14 pm

blow thru would warm thing up a bit. if it gets cold here i have to take my deck standoffs off, duels will ice up here also don't feel to bad. :D

Mon Apr 14, 2008 6:53 am

Many engines came with an aircleaner housing that had provision for heated air intake. There would be a corrogated hose running from the snorkel to a tin collector over one exhaust manifold. On the snorkel would be a vacuum can to control a valve to regulate the hot air flow.

At high vacuum - low load situations the vacuum can would let in heated air to control icing or improve fuel atomization under non-icing conditions. During high low - low vacuum conditions the vacuum can would only allow underhood or ambient air into the engine.

I think most VW's used a counterweighted air door on the snorkel to get the same result.

Ugly but effective.

Mon Apr 14, 2008 6:23 pm

miniman82 wrote: bugninva wrote: padex wrote: Move to were its warmer Problem solved :wink:

nah, got a better plan... larger engine, blow through EFI....need to order the heads, then mock it all up...

There ya go, problem solved. :D Hit me up if you wanna do an MS conversion, I just got done building my second one.

Mini.... i purchased the CB "easytune" EFI and turbo setup a few months back.... my original plan was MS, but chose a "package" due to lack of time these days... BUT...(always) i am considering adding the current turbo i have to my ghia with MS...i will probably be hitting you (and a couple others) up with questions at that time... thanks

Mon Apr 14, 2008 9:26 pm

wasnt there something going around about CB's system being junk?

BTW mini.... i really hate you. 2 done and im not done with my first!!!!
hehe almost done, waiting on parts to deliver!

Tue Apr 15, 2008 12:36 am

bugninva,

Yeah, the driving factor behind the purchase of a system like that seems to be lack of time for most people. I trust you'll let us know how it goes, hopefully with a video when it's done? :D I'd have gotten one myself, as the 'bolt on' package seems very appealing, but I just can't bring myself to pay that much for something I know I can do myself for $500 tops. Maybe I have some Jewish in me, and I don't know it? :lol:

Chris, I meant I was done building the MS box, not that I had finished another car! Silly... :)

Tue Apr 15, 2008 8:39 pm

dog_jr911 wrote: wasnt there something going around about CB's system being junk?

some have said the old "dash tuneable" models weren't the best.... the new easytune models seem to get good reviews, of course i didn't just limit myself to what is said about a product by folks that haven't used it either... :wink:

miniman82 wrote: Yeah, the driving factor behind the purchase of a system like that seems to be lack of time for most people. I trust you'll let us know how it goes, hopefully with a video when it's done? I'd have gotten one myself, as the 'bolt on' package seems very appealing, but I just can't bring myself to pay that much for something I know I can do myself for $500 tops. Maybe I have some Jewish in me, and I don't know it?

I did my homework.... i was headed the MS direction, but as i said, time was the main factor.... i did the price checking, and honestly, to do a turbo and EFI using the parts i got in the kit(which is pretty much what i wanted, i didn't want to do a "junkyard" special), the price was great....purchasing parts individually can add up, and buying used parts or parts hunting along with the trial and error that may be necessary is more time than i wanted to devote to it... in my younger years, i'd have done it all, but since money is less important to me than time, a good bolt on was perfect for me.... I spoke to Pat many times about my engine, their system, etc and feel pretty confident that i'll be happy....

Tue Apr 15, 2008 9:59 pm

You made the best possible choice, I think. You're right about money being less important than time too; sometimes the reality is it's just better to pay for a complete system than going around shopping for a year. In the end, it comes down to one thing-what's your time worth? Sometimes the answer to that question means the differance in what you end up with. I'll just keep doing MS conversions until I don't have the time do muck around with it anymore, then I'll probably be in your position; enough money, but not enough time. :wink:

BTW, I just got my Megajolt ignition kit, so I can do distributorless coil packs on my draw through turbo Corvair. I didn't like the way the distributor was bouncing all over the place causing ping under boost, so hopefully this will cure it. I'll leave the fueling to the stock carb, and program my own ignition.