where do you get the plumbing to run twins? Or is it something you need to fab up yourself?

 

Thats what I was wonderin, now the big one I was wonderin about is the exhaust adapter from the hx35 and the ht3b as far as what everbody used,

All I got so far is the hx35/40, ht3b, 5" downpipe for the 3b, oil lines and hoses shouldn't be a problem just the other piping,hmmmmm any suggestions part #'s ect

BC

 

correct me if i'm wrong fellas but the turbos would not move any air if it weren't for the exhaust flow, correct? that is why the turbos is set up the way they are!!! aong with what 600 megawatts said (good post by the way) the turbos would not work if not for the exhaust flow. the turbo's operation has nothing to do with the compressor side!! but if i am wrong i am sure you all will let me know!! the way i understand it is that the compressor wheel only works because the exhaust wheel is moving!! twins are very complicated when building and those that venture into the twins world soon find out they are fun to drive but a pain to fabricate!! i can vouch for this! see ya fellas!!

 

Once again we are on the same brainwave. I have a collection of Delavan nozzles, as i do alot of boiler and marine furnace work, and have been trying different cone styles, gph, and spray angles. I have found a methanol stable chem pump designed for ag sprayers that will deliver 3 gpm at 220 psi!! The biggest nozzle I have off hand is a 5gph, but have several bigger ones available to me. I liked the 5-45*/B series. When tested at 220 psi, these things make a nice dense fog and flow an obvious 10+ gph, since they are rated at 100 psi/5gph. So I'll keep you posted on the results, but the dawn of a new intercooling fad may be around the corner!

 

got Diesel, glad you know about the nozzles. Your ag pump will need a decent sized bypass back to the tank though, since its moving 180 GPH, and you will only be using 12 GPH..

Only one correction to your post though, a 5 GPH nozzle will only flow 7.42 GPH at 220 Psi. Flowrate through nozzles is not linear with pressure, it follows the square law..... So to figure out what a nozzle will flow at X pressure when its rated at 100 Psi do this:


new flow = rated flow * Square root of (X/100)

so in the case of the 5 GPH nozzle:

new flow = 5 * square root of (220/100) = 7.42



So to get your approx. 12 GPH at 220 Psi, get an 8 GPH nozzle.


KP

 

thanks for the formula....my flow estimates were just off the cuff. I'm building something that will not let the nozzle "pee". This could be bad news aiming a steady stream at a wheel spinning at high rpm. I'm aiming for an adequate bypass...mecahincally regulated....that I can minimize the "pee effect", which should take care of excess pumping efforts if I make it right. The last nozzle adapters I picked up utilize a return line, I just haven't mocked them up yet to try it out.

Thanks again...
chris

sorry to highjack the thread with water/meth talk guys.....but it's "kinda" relavent in the end

 

sorry for jumping in here..

just wanna know if anybody knows what kinda turbo it is in my picture gallery
well we have installed that turbo (supposedly from a big cummins)
and been workin on the twins since moday, they are almost done...

the downpip, from the hx35 to the big turbo is done, and all the oil lanes too...
we cranked it up today for about a minute... the small turbo winded fast at idling, like always, but the big turbo barely turned around, kinda slow. started turning a lil bit faster, while accelerating... is that correctly. i started to doupt its gonna make any boost

 

was the engine under load? Usually they need to be loaded down to really spool up a big turbo

 

thanks big deezul,
NO it wasnt under load, the engine was cold, and we didnt have the 5" down pipe on yet. twas smokin at the firewall. its a huge turbo... could it be too big?

 

so there was no cold pipe on, i take it? since you were looking at the blades. the top turbo *supposedly* sucks air through the big turbo, helping it work when there is little flow.

 

No cold pipe on... i am going out right away to weld the cold pipes together if everything works out fine, we'll be test driving it today...

to what 600 megawatts said:
Both turbos spool at the same time... so do they both together spool earlier???? (before 1500?) i think a read that somewhere...

thanks for the replies

 

In a twins setup, the big turbo spools faster than it would as a single, and the little turbo spools slower than it would as a single.

They tend to "average" out. This is why you can tell that if you have one turbo spooling a lot sooner or later than the other, then your combo is way off.