Outer Limits 4x4 Board

Posted: **Wed Aug 12, 2009 10:12 pm**

Just wondering if anyone has come up with a way to waterproof the 4.5 1FZ-FE.

Im getting sick of the the engine only running on a couple of cyliders every time it looks at water, even if you give it a quick spray with a hose.

ive tried sealing the distributor cap with silastic, and the little hole in the bottom of it, but that doesnt seem to work.
Is the ignition coil causing the problems?

Hope some can help me out
Cheers

Posted: **Thu Aug 13, 2009 7:05 am**

ours done that same mate, look at getting new leads. if they are a few years old they would have possibly perished by now and let water in.

Posted: **Thu Aug 13, 2009 8:57 am**

there are two holes on the dizzy, one on bottom and one near the adjustment bracket on side.

i have fitted breathers to both holes up to the firewall as mine use to drop cylinders but ever since (touch wood) the donk has survived the water.

new leads and dizzy cap (and gasket) will also help!

Posted: **Thu Aug 13, 2009 9:52 am**

Get the engine hot and spray it all with silicone 80 spray. Mine goes through water over the bonnet and not splutter at all. Ive had an old 1 that did it once. Took 3 days to dry out

Posted: **Thu Aug 13, 2009 6:54 pm**

If you have a compressor try plumbing some air fittings into the dizzy. Run compressed air through it whenever you go offroading.

Posted: **Thu Aug 13, 2009 8:27 pm**

the problem might be not so much the distributor, but water getting under the top plastic cover and/or getting down the plug holes. try sealing that and see how you go.

Posted: **Thu Aug 13, 2009 9:12 pm**

Had trouble with water in plug for the throtle position sensor. Filled conections with water proof grease and havin't had any problems since.

Posted: **Fri Aug 14, 2009 6:52 pm**

From offroad80s forum...

DGS4WD wrote:For those still interested in setting up pressurised air to your distributor, here are some pictures of my setup. I have been running with it now for about 6 months and it hasn't skipped a beat... and Iv had the engine bay completely submerged.

You can see the T-Piece I have used to tap it into the compressor using a genuine ARB solenoid and blue locker line.

I tapped a little fitting into the distributor housing and used a short piece of vacuum hosing in between the housing and locker line as the locker line was too small in diameter to fit onto the housing fitting. You can also see the regulator I used.

A quick and cheap FIX for your underwater problems! This has been the only thing that has actually worked.

In this thread if your a member http://www.offroad80s.com/dgs4wd-now-wi ... 36-15.html

Posted: **Sat Aug 15, 2009 7:20 am**

+dj_hansen+ wrote:From offroad80s forum...

DGS4WD wrote:For those still interested in setting up pressurised air to your distributor, here are some pictures of my setup. I have been running with it now for about 6 months and it hasn't skipped a beat... and Iv had the engine bay completely submerged.

You can see the T-Piece I have used to tap it into the compressor using a genuine ARB solenoid and blue locker line.

I tapped a little fitting into the distributor housing and used a short piece of vacuum hosing in between the housing and locker line as the locker line was too small in diameter to fit onto the housing fitting. You can also see the regulator I used.

A quick and cheap FIX for your underwater problems! This has been the only thing that has actually worked.

In this thread if your a member http://www.offroad80s.com/dgs4wd-now-wi ... 36-15.html

I was just interested in what PSI did they run

Posted: **Sun Aug 16, 2009 12:37 pm**

gtir300 wrote:there are two holes on the dizzy, one on bottom and one near the adjustment bracket on side.

i have fitted breathers to both holes up to the firewall as mine use to drop cylinders but ever since (touch wood) the donk has survived the water.

new leads and dizzy cap (and gasket) will also help!

I fitted breathers to mine also and it worked well.. still used to play up occasionally but when it did it was just a matter of squirting some CRC down the breather and it would clear up straight away!

Posted: **Sun Aug 16, 2009 4:06 pm**

i cant give specific experience on the 4.5
but silicon spray does wonders. spraying it on the leads and well anything electrical cant hurt.
but it depends, how deep water are you looking for go through?

Posted: **Sun Aug 16, 2009 6:25 pm**

Thanks for all the replies guys.
There are some river crossing in the vic high country which get reasonably deep especially in winter, so i wouldnt mind being able to wade through something at headlight height at leasr, but at the moment i could throw half a bucket of water across the engine and she acts up
On my previous 80 i put a breather from one of the holes on the dizzy but i didnt realize there was a second one, so ill check that one out when i get time

I'm just about to put an air tank in, so i'll plumb a line into the dizzy and c how that goes

Posted: **Sun Aug 16, 2009 7:13 pm**

If your going to plumb breathers into the dizzy. Why not just plumb it into the air filter?? I think that the pressurized system is still the best though. Just have it on a air solinoid, from your tank and just switch it on when crossing rivers. But again what pressures have people found suitable, 5psi?? Any pressure is good pressure, solong as its greater than the water pressure at what ever depth your crossing.

I really dont care if I distroy my engine, that way I can rebuild it

. Sofar the deepest Ive found is just over headlights and no drama's. Im also wondering if my 110 litre gas tank (fitted where rear tank was) is going to make my arse float in the deep stuff??

Posted: **Mon Aug 17, 2009 4:36 pm**

strom80 wrote:

I was just interested in what PSI did they run

IIRC 4psi.

Best to join the forum and have a read.

Posted: **Mon Aug 17, 2009 9:02 pm**

If you put hoses on the 2 holes in the dizzy, and seal the third small one with silicone, then tee the hoses into either side of the filter blocked sensor, the restriction the filter poses, will promote flow of air through the dizzy and keep it dry (unless the filter fills with water) The other place water gets in is under the throttle body into 3 and 4 plug....descent leads and some waterproofing foam/silicone/etc will make the motor run underwater almost

Outer Limits 4x4 Board

Waterproof 1FZ

Waterproof 1FZ