1HD-T Intake Manifold Modifications

[gerg]

Id have to agree. If your egts are out of control you should up your boost or rework the turbo sizing for less backpressure. Meth in a diesel is a stop gap. If you want to run lots of liquid, what not just run distilled water? I dont think it detonates last I heard. Now the cylinder pressure rise might be signifigant. Ive never read anything about water injection and peak cylinder pressure mind you.

 

[wrongway around]

My thoughts too on the additives,first it gets addictive then you got a full on junky. Can't beat those numbers though . I thought he was at the top of the turbo ladder with the g turbo pulling 30 pounds boost . Could he put a pie warmer inside the plenium.

 

[Landcruiser Power]

I think we need to start a thread for methanol injection . I've been playing around with it for years in smaller toyota diesels. And have spent hours fine tuning on a dyno. Haven't found a chip that could come close power wise and added bonus clean engine that runs cooler even with it turned of

 

[Tapage]

I've been injecting water alcohol in my both diesel engines quite time now .. in both cases it's not for EGT control but for added fuel .. both my IP are maxed out in their stock form.

 

[ForealBoreal]

Forgot to post these awhile back.
3.5" pipe

 

[dadinabarrel]

The last post here was in Jan, Ive just started on mine, what's the general concensus on diameter? I'm doing 3" at 45' centre mount to my WTA I've bought 4" for the plenum chamber but it looks huge, I'm now wavering between 3" & 3.5" Maxed out 10mm VE

Anyone?

Ready for sand blasting and a tidy up, then polish the runners before adding the plenum

I bought this manifold off of eBay for $70 so that is not my soot. I'm keeping the nice shiny one for now as a just in case.

 

[ForealBoreal]

This mod is on the back burner for me at this point.
From what I measured the most I could fit was 3.5" round pipe.
I also realized that the #6 inlet will have to be angled to clear a heater valve coming out of the fire wall.

 

[dadinabarrel]

Thanks Karter, I was leaning towards the 3.5"

 

[dadinabarrel]

Progress report:

Decided on 3.5" for my plenum modification, but the I/C is too big to get under the bonnet and too big for the outlet to fit to my manifold. So I guess I'm getting a very large bonnet scoop in the immediate future hahahaha....

I'm changing all the hoses out and replacing them with 19mm blue silicon

Check out how much bigger the Bosch Cobra is than the standard pump, that should have the water flogging around

3.5" aluminium tube on my cut down sandblasted manifold

When I set up, it's pretty obvious that if I want to keep the I/C centered over the rocker cover so I can keep my scoop central, there is no way it's going to have room for a 45' or 90' outlet from the manifold to the I/C.

I'll have to do a dirty amateur version of Z()ltan and Biggie's concepts. I don't have the technical skills they have, but I'm not out on the edge like they are either so it should work out ok

First bits cut and set up, ready to start on the hard bit

It did not feel right taking a grinder to a brand new I/C, but it's got to be done

 

[dadinabarrel]

Does everyone know that if you put paraffin wax on a 1mm cutting wheel, it will slice through 4mm aluminium like butter without clogging the blade?

 

[Dougal]

Does everyone know that if you put paraffin wax on a 1mm cutting wheel, it will slice through 4mm aluminium like butter without clogging the blade?

We do now. I'd been using cutting fluid from spray cans.

 

[dadinabarrel]

Sweet, I was pulling my hair out previously

 

[dadinabarrel]

First bit's done

 

[wrongway around]

that sir looks perfect . looks like your designing a new a/r for the two togethe, are you putting a heat sheild under to deflect and shed heat ? you could almost design it into your wta.

 

[ForealBoreal]

are you planning on being able to seperate the manifold from the intercooler?
I look forward to your results

 

[serenity]

Nice work! On the cutting disc issue, there are different discs available for different materials. For ferrous metals you would use an aluminium oxide disc which is probably what you have in your grinder. As you found, aluminium oxide doesn't like cutting aluminium without issues. If you go to a decent tool shop they should have silicon carbide discs which are designed to cut aluminium.

 

[dadinabarrel]

Thanks for the feedback guys.

I have to keep the I/C as low as possible so I'm looking for some sort of adhesive hear shield that I can put on the bottom to deflect heat coming up from the rocker cover. And leave a 5mm air gap. Best I can do because it's so tall

I've looked at putting a flange between the two but although it means I would be able to separate the I/C (why would I need to?) it would make no difference in access to my injectors/glow plugs.

I'm going for one piece, I'll just have to deal with it.

 

[dadinabarrel]

Gonna look pretty cool with the new exhaust manifold.

 

[yotahed]

sweet concept. Looking forward to the finished product and results.

 

[dadinabarrel]

That should be solid enough, a big fillet down both sides