more supercharger talk

[truckinwagen]

just bought some ARP moly lube for the head studs when I put this thing back together.

it was a real pain to find someone who would ship the 1.5 OZ tube for LESS THAN $40!!!

everyone wanted to ship UPS next day air(with a brick in the box apparently)
but I finally found someone willing to ship USPS priority for $7(again with a lead blanket as packing apparently, but its better than $40) but they charged another $7 as a handling charge

anyway, so 1.5 OZ of moly lube cost me $20.
more than I wanted to spend, but at least I have it now.

-Owen

[blackdogvan]

Shoulda ordered 2!!

[arb]

if the machinist is incapable of milling the head flat with the precups in it, what makes you think he will be able to do a good job cutting and replacing the precups?

if I don't trust a machinist to do the very basic(slowing down the mill) I am for sure not going to trust him with the more difficult things.

Got to agree with this as a former machinist. We calulate the cutting speed in feet (inches) per second, and it is different for each type of material. There is a referance manual for machinist with tables for material type, hardness, etc. It will show feet / sec and how much to cut at a time. Aluminum is cut about 4 times the speed of steel and you hog out up to 0.060" a pass with aluminum and only 0.005" - 0.010' or so with tool steel.

I never tried to cut mixed media so I would cut this as though it were all steel. The aluminum likely would not care about the slower speed. The more challenging aspect is the "interrupted cut" - this is very hard on the cutting incert and the mill will make a bit of noise doing so.

[truckinwagen]

Shoulda ordered 2!!

I ordered the 2.5 OZ tube with the re sealable cap as you should only need .5 OZ each time you install a head, it should last as long as I need it to.

and yeah, a machinist that cant read a table for cutting speed will get nowhere near a head of mine with the prechambers out.

[truckinwagen]

well I just talked to the machinist and he said he is not afraid of the diesel head!
he knew exactly what I meant when I expressed some concern about it being machined properly, and the price tag for machining and a wash is $80!

hopefully it will be done tonight and the gaskets/ARP moly arrive by friday to do the run out to the valley again!

-Owen

[truckinwagen]

just got a call from the machine shop, head is done!

[truckinwagen]

headgasket is in!

now I just need the ARP moly to show up...

[rabbitman]

I read on here that edelbrock gasket goo/sealer/gaskacinch works good. I read about it a while ago and searched to find exactly what it's called but everyone called it something different.

[truckinwagen]

well, the damn ARP lube did not show up today, so I guess I will do with 30WT
anyone know for sure what the torque value is on 12mm ARP studs with 30WT? I want to say 120FT-LBS but I lost the piece of paper with the chart on it.

-Owen

[truckinwagen]

well, went out to mikes today, the head looked beautiful!



set the valve lash(much easier on the bench than on the engine) installed my EGT probe:


and the head went on.
about 5 hours after I arrived at mikes, the motor fired up!

took a few minutes of idling and adding coolant to get all the air out of the cooling system, and then I took a test drive out to Tesoro for some diesel.


it held oil pressure, held a steady 180* water temp(no coolant spewing out this time!) and pulled pretty hard!

it seems to rev to about 3500RPM(using a little math from MPH and gear) and makes about 10PSI of boost there.
EGT was about 300* at cruise, and if held to the floor they will go as high as 600* but no higher, so there is definitely room for lots more fuel.

I just received a set of springs to test on the governor, but I think I will wait until it is back home to do that.

so tomorrow I am going back out to do just what the motor does not want to do, drive on the highway for an hour at 65MPH.

it was too dark for pics/vids tonight, but there will be plenty taken tomorrow before it comes home!

-Owen

[Swartzvw]

Ive been following this thread, thats awesome that its now driving!

[RabbitJockey]

i'm curious why you didn't put the egt in one of the collectors to at least get numbers from 2 different cylinders.  But man those egts are low, i'm curious how this is going to turn out.  I know a lot of gas super charger people are disappointed because turbos generally make more power.  How ever i am thinking that  since there is no set air/fuel ratio you have to go by and since you can crank up the fueling until the egt is at its peak, and there is no back pressure, that this maybe quite a powerful car.  the anticipation is brutal haha.

[Rabbit on Roids]

is your thermo lead very short or something? cause like trevor said, the collector would have been a better spot to read from. you are reading only what #4 cylinder is doing, cyls 1-3 could be burning down and the gauge would never know it. im sure it works just fine, and is probably a fine spot to mount it, but i never thought it was wise to just monitor a portion of your engine.

[truckinwagen]

I put the thermocouple there because where all four cylinders merge is so far downstream that there would be substantial temperature drop from what is really going on if I put it there, and all the places where two merge on the manifold would be in the way of the intake.

im not too worried about the reading being much different than reality, the intake is not going to bias to any cylinder in particular, and I can also look for smoke to tell me if the others are in meltdown heat(absolutley no smoke right now, even under full pedal)

there is lots of room to go up, I think where this motor is really going to shine is accelerating from a stop, and from a rolling start, as the boost is already there, there is no need to wait for it to fuel big, it is already scratching the tires in second, and the EGT's haven't even broken 1000* yet

so for this non turbocharged engine, what do you think would be a good target max EGT?

-Owen

[Rabbit on Roids]

well, i bet you could run MORE egt's because you dont have a turbo to worry about melting. i would say you should at least be able to run 1400 or 1600 safely.