Outer Limits 4x4 Board

My 93 has the same outer flanges etc as the 97 disco axles I have. I have not however pulled these 93 axle shafts to count the splines on the diff end. I have seen photos of the later style axle shafts with 10 spline inners. So there must have been a transition period.

wax wrote:oh the zd30 pistons will go in as well will they. I didn't know that. Im just working on a qd32 and tweaking it up to go a bit better and was reading this thread learning about pumps.

You will need a four valve head to work with the ZD pistons.

wax wrote:you guys want direct injection then get a bd30 head it bolts on a td27. opps you guys have to many cylinders. But on a serious note the bd30 pistons will work nicely if you did a direct injection td42 some how

We already worked that out with the ZD30.

What is special or specific about those connectors over others? Electrickery is not my thing, so I'm happy to be corrected/learn more ;) The metals used. Thermocouples work on small voltages being created at the junction of different metals. If you use the wrong connectors then you get an extra ...

Oh also picked up a VDO pyro on tuesday. I noticed it comes with 5 metres of wire from the sender to the gauge. I have seen a few comments online saying you can't shorten it.. is this the case on the VDO guages too? I used a VDO pyro kit and the instructions leaflet said not to cut the cable as it ...

SCANAS wrote:You could also fit a Dawse Valve in the system to regulate boost?

Nope.

yes I believe it is.. threaded rod on the waste gate. Is it 3 turns = 3psi? screw out == looser == less pressure to open wastegate?, screw in == tighter == more tension/pressuer required to open wastegate? It'll take a few tests to set the boost pressure with the wastegate. It depends not only on ...

Oh also picked up a VDO pyro on tuesday. I noticed it comes with 5 metres of wire from the sender to the gauge. I have seen a few comments online saying you can't shorten it.. is this the case on the VDO guages too? You can shorten them, but you need to use the correct connectors. It is the ...

It takes exhaust heat to drive a turbo, if you are getting enough boost to think there is a problem, then it is likely an overfuelling problem showing as high boost. What is your engine, what is the turbo and how much boost are you running? Do you have an EGT gauge, if so where is the probe located ...

Just one other thing to check. Your turbo has a round entry and your manifold has a square exit. It may pay to put a plate in there with a nicer transition.

Cheers, I don't know what the stock setting for the wastegate is, but it probably changes a little when you clock the turbo. Most guys are running under 10psi.

Flare a piece of exhaust tube, make a round hole flange that slips over it and bolts up to the three holes.

Good to see my turbo selection has gone global.

I follow on the retarded timing giving high EGT's due to the fuel still burning on the exhaust stroke, but wouldn't advanced timing be just as bad with ignition occuring pre-TDC? Detonation and pre-ignition is baaaad last time i checked Ignition always starts before TDC. The goal is to hit maximum ...

Going too far advanced can also give very high EGT's which is not good for turbo life. If you don't have a boost compensator on your pump, bit of black smoke when you first put your foot down is ok, but should stop once the turbo spools up. More advanced gives lower EGT. It is more retarded that ...

Essentially. Too far advanced sounds rough, gives crisper response but can smoke black if gone too far. Too far retarded is hard to start, gives doughier response and smokes white if you hit the extremes. By trial and error you can find a pretty good setting. More retarded gives more energy out the ...

Fair bit of jiggle, I can't read the numbers. Just tell us how it's going.

Did you see this one:
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Yes the cooling is another reason I kept to 10psi for that turbo size. 50% more power = 50% more heat.

You won't need a relief valve. But you will need to secure all hoses that are subject to boost pressure. Pop the wrong one off and your engine thinks it's party time.

Just remember you NEED 20psi of boost :) Followed by the need for a new head, new precombustion cups and possibly new pistons. I sized that GT2052 to get the broadest boost range on that engine with about 10psi max. IMO more on a 3B is asking for trouble. It's fine to run more if you are prepared ...

old lux wrote:

short stuff wrote:ive heard rumors coming from this v8 super car thing that nissan are going to re lease a 5.7 v8 but i think that petrol though

Also bringing out a turbo v8 diesel from what i have heard.

I wonder if they will do a toyota and glue two ~2 litre 4 cyl diesels together to make a V8.

Baja Burley wrote:What's the weight and strength (yield) difference between 7075, mild steel and say 4130 chromoly? All in a solid 50mm?? Just curious. Are more people going aly because of weight?

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Find out what the signal to the tacho is and find a way to replicate it. Dakota digital make a series of boxes to convert tacho signals.

so with the help of Ray and Rick I think i'm getting closer to a cost effective upgrade... 1) Denco exhaust manifold with a T25 Flange - ~$450 2) Garrett 2052 (p/n: 727264-5001) Turbo - $950-1200 This setup should closely match what ih8mud's Diesel42's kit contains.. That turbo was picked for the ...

Thanks for your input kiwi, i was hoping you would read it and give feedback. I have in there somewhere written that you should find the appropriate listed torque values and use them. I"m away at work at the moment and am not able to access the chart i was given for them by the supplier. I am ...

One thing I can't find in your write-up. Actual tightening torque. The whole problem originally is not enough tension on the bolts which let the drive-flanges move. If you can stop the drive-flanges moving, then there is no problem. Step one would be to put the strongest possible bolts in the ...

I've driven plenty of tractors with water ballasted tyres. The tyres lose all compression and all shock absorbtion. Ride quality sucks.

Is the ring-gear still attached to the flywheel?

Sounds like you need to strip it further either way.

From what I have been told solid will be stronger then hollow however hollow will not flex as much but if you were to bend the two solid will except more angle and return to its orginal shape where hollow will not fully return atleast this is what I have been told If your solid and hollow bars are ...

thats not a bad price evan 7075 is aircraft grade and 6061 in structural grade so I have been told if you would believe a sales rep :) ?? Either can be aircraft grade. "Aircraft Grade" means the material can be traced right back to the smelter. It is all about traceability and means absolutely ...

TheBigBoy wrote:How do you come to that? Look it up. Hollow take much more stress to bend it.

Bollocks.
Go ask any engineer to put you straight. This one has better things to do.

But solid is weaker than hollow? Surely you are taking the piss. No im not. Hollow section cold rolled dome is stronger than solid. Not sure how that relates to ali though. In your example you aren't comparing the same material in two different forms (hollow and solid), you are comparing two ...