Calling all 4bd1 gurus and need help!

**Hammerhead** · 15th September 2015, 08:28 PM

Hi I have a few questions for the isuzu gurus out there. I did the head gasket and have had that now resolved.
First question:
In the process I have realised that the foam and crap that is only partially there is the remains of what was my fire wall insulation. What's the best and where do I get it from and average price?

Second question:
What's the tourque settings for a 1985 first month (so I'm assuming it's a 1984 block) on the head and etc inlet and exhaust manifold bolts also the oil sump bolt tensions ( now is the perfect time to total overhaul!! )
I have a 86 model work shop manual is there any diffence?

Lastly:
How the hell do I change the beeping engine mounts? I have tried and tried but I can't get the leverage to undo the bolts?

**85 county** · 15th September 2015, 08:34 PM

fire wall insulation?? what is that?? some thing added by some one?

all the same, same block

WD40, and a ring spanner, as well as a jack, use the isuzu mounts, a bit thicker so a bit harder to get in but softer

**Hammerhead** · 15th September 2015, 10:53 PM

Yea the fire wall heat proofing

**JDNSW** · 16th September 2015, 06:15 AM

Originally Posted by 85 county

fire wall insulation?? what is that?? some thing added by some one?
........

Yes, added by JRA during assembly. Mostly disappeared from mine. I have thought of replacing it, but I can't see how it would be possible with the engine in place, so have not gone further than thinking.

John

**Hammerhead** · 16th September 2015, 06:48 AM

I thought exactly the same until I had to do my head gasket. Now with the head off there is heaps of room. I just don't know what to use?

**87County** · 16th September 2015, 07:03 AM

Whitworth's have a boat engine foil+foam insulation - it is self adhesive but would need proper preparation.

**manic** · 18th September 2015, 08:51 AM

Originally Posted by 87County

Whitworth's have a boat engine foil+foam insulation - it is self adhesive but would need proper preparation.

Yes they do, but be warned, if you go to the melbourne city store and tell the old bloke you want the insulation to sound proof a land rover - there is a good chance he will wet himself.

He will laugh all the way to the store room and when he comes back he will crack up again. At some point he will catch his breath and tell you that he used to own a series landy back in prehistoric times. I have never seen a man so happy to own a Toyota!

**steveG** · 18th September 2015, 11:55 AM

I used the thick Whitworths insulation (one with the heavy stiff middle layer) on the county. Used a shiny insulation tape from Bunnings for joints and it seems to have stood up well over the 4 years since fitted.

The adhesive on the insulation is VERY aggressive. Once stuck, its not coming off without destroying the foam.
Good for keeping it on there, but provides some challenges to get it in the right place initially. I did mine with the guards off so wasn't too bad. Try and only expose the minimum adhesive area until you get it in place, then work on peeling the rest of the backing off.

Steve

**DoubleChevron** · 18th September 2015, 01:57 PM

EZ Cool Automotive Insulation heat barrier and noise reduction for cars, trucks, classic cars, street rods and much more

put it on the inside of the firewall as well. it'll stop any heat transfer dead in it's tracks

It is very much just a bubble foil type product, but works exactly as advertised!

seeya,
Shane L.

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