Also have a full gas bottle now, as the shop that used to do them... will still do them, if you go in and ask them...

Bargain... seems pretty full as its heavy... ill get on with the car tonight!

David

 

I have a copy of the book, but no scanner. If you build me an FMIC kit, I'll copy it out word for word

 

LMAO...

Andy.. Still working on that Aluminium plate...

David

 

Cheers David ..... sorry, I thought you had another chunk lying around.
I'll see what I can dig up locally

 

Not sure if the leak question was directed toward me but if it was....
No leaks, just forgot to turn it off at lights, when I moved off it engaged and rattled some what. bout five mins later lots of blue smoke , drove home gently on 3 cyls.
It was a 306 by the way, not that that makes any difference, I know it was way too much for a standard engine, it was more of an experiment as I was buliding a turbo motor for that car and wanted to see what a similar block could take (bit silly really, she had only done 24,000 miles ) yes, I think I am certifiable.
Pistons !!! the first one was hanging around for ages outside but I can't find it now , second time the reconditioners threw it away after taking the rod off it, so no piccy's I afraid (wish I had)

 

David where did you get the refill done. If you have chance or if its worth it could you post some more pics please. Cant wait for it to be running.

 

sorry, I meant my co2 bottle for the welder..

Prototype up pipe from tim w... needs some bolts welding onto plate at the top... looks good though..


Got this lot of some sort of diesel engine in a skip at the scrap yard and they still charged me a fiver.. Pressed the whole think apart...


Bracket in place..


About to tack the centre in place, (red thing is a magnet)


Tack welded in place... Why arent welds very photogenic (sp)?? It looks neat (Or did to the naked eye.. and dont say the camera never lies!)


Painted and hung up to dry..


Bracket, belt and pulley in place (belt is off ford probe as said earlier)


Made bracket for otherside.. I wasnt going to bother after seeing someone elses.. but Dad 'told' me to.. Not right happy with it as its messy and I was tired..


oh and i've thrown a solenoid in..


David

 

ohh nitrous solenoid !.... good luck

 

Cheers David, looking good.

 

David,

I re-read the chapter on Nitrous-assisted turbos this morning. Vizard reccomends a 10hp (0.6lb/min)jet, not 50. Each shot of N2O will only be around 0.5 - 1 second so the use of nitrous is quite economical.

It wan't as comprehensive as I remember it to be, but there are some good points in it. He doesn't mention any figures as for when to turn off the N2O, one graph shows a motor with a peak boost of 15psi with an N2O switch-off window of between 7 and 12psi. However in the text he throws the figure of 3 to 4 psi about, without stating any actual reccomendations. A bit of trial and error is needed, I guess, to make it smooth.

On the plus side, on forced induction motors, that 10hp shot will actually have an effect of around 15 - 20hp due to the intercooler effect.

I'll try and scan it in over the weekend at a friends house, it's only actually 4 pages

 

hmm, i've seen a pully just like that on someone elses car recently?!?!

Looks good David, also the flanges on the uppipe look nice and thick, are they stainless though?

 

if you can tack them quickley they should be fine, too much heat will damage them as they will lose their temper.

10.9 bolts should be fine, 12.9 better and both widely available. Not sure of the thread though looks like M10 fine. Probably best to ket 'K' nuts, and silver plated ones if possible.

Don't use stainless, they are designed not to rust, rather than not to break.

Paul

 

oh and I got the idea of Pat as I saw his car first... but I know what you mean!! I was going to use two belts and drive one off the air con pulley..

David

 

David when i had to grind the 2 top bolts off my turbo where the dp connects i got high tensile replacements. No problems with them and thats after 10000 mils. I know your probably after a more technical answer, but just thought i would add my 2p worth.

 

whats the difference between 10.9 and 12.9 and dont say 2..

Remember I do IT Support not engineering

David

 

wow never seen a bolt loose its temper before

 

yeah, they go nuts

 

Nitrous...are NOSzles available over there? They are spacers for the injectors that also jet nitrous and fuel. They are still knid of new.

 

Keep in mind that fuel pressure must be above boost pressure by a few psi, make sure your pump can cope.

 

I've got an uprated fuel pump and pressure reg.

David

 

David i think i got the kit from TS something near silverston, i think someone mentioned it earlier in the thread, or in the Nitrous thread by New Scooby Fan, gice them a bell if you want smaller jets, or knowing you you will probably try an dmachine jour own

Just out of interest the part that you welded onto the bracket for the pulley, does that rotate with the pulley or is it fixed. It looks like it does rotate. Dont want too much wear on the belt.

 

the centre of the pulley is a bearing, so yes it rotates

David

 

who moved my pic
I can let you have the bag of mixed jets I have to sort out the NOsing /fueling, I think i have jets down to 25bhp, got a sheet somewhere that gives a guide as to what size to use. can only let you have them after I have chawed the ones I need to set mine up tho .
P20 it's TTS by the way

 

OT - this thread is 31 pages. Why is the total number of pages listed on the Drivetrain forum always 1 less than the actual number of pages in the thread?

......../I'll get my coat

 

He may only reccomend a 10hp jet, because its for a 1300cc mini. I would try at least 40bhp. Even if you dont have the book, IMHO it is worth buying. It makes very good reading if you are into that kinda thing. Your tensioner idea looks familiar, and I would lose the bracket on the pass side. I dont think its going to support very much, unless the picture isnt revealing all. An idler pulley of a subaru timing belt would also be useable, and there must be plenty of them around, as there is a couple on every engine, of which there must be loads of broken ones around.
At least you are back on track.

 

stevieturbo.. it goes further down and bolts onto the head just infront of the inlet as well..

I thought someone would mention this.. I think Ill use a 50bhp jet then as thats as small as I have...

David

 

I thought it was. I just wanted to make sure cause i am learning you see.

 

David, I like the idea of your bracket, it's a bit neater than the Pat method but how thick is the material you used? Bearing in mind that it's a pulley tensioner it really musn't flex, IIRC Pat used 10mm plate for his which as ususal may have been a bit OTT, but it won't flex!

 

jammy barsteward

 

I don't think engine size is relevant. The idea of adding nitrous off-boost is to improve driveability and reduce lag, not produce large power. With a bigger jet, it's gonna be a jerkier ride.

As someone said earlier, you need to be able to turn the nitrous off without a downward step in the power, thats going to be harder to acheive with a 50hp jet, although I don't think it's impossible. Certainly I don't think a 50hp jet will do any harm, but I think it's going to be harder to set it up "right".