1/4 scale V8, first project.

GDay All,

Keith I just gotta ask, where does the fuel feed into?

There doesn't seem to be any provision for it in the butterfly block, so how do you plan on feeding this beast?

Are the holes in the intake manifold a clue or .... ???

Can't wait to see this baby finished ;D

Thanks for replies. All comments welcome, even constructive criticising ones. Any bits look slightly odd?
Personally I don't like the crank pulley. Looks like it came out of a meccano box.

Trumpy, the plan is to fuel inject it. I want to make 2 small injectors and hide them in the vee of the engine block. They will fire upwards through the base of the inlet manifold and feed 4 inlets each.
I haven't done mega amounts of research into this at the moment, but this is what I'd like to do.

If it turns out to be too complex then I'll have to scrap the top plenum idea and go back to carbs, maybe 2 or 4, depending on what looks best.

Still working on the oil pump. Hoping to give it a trial today, if I can sort out a quick inlet connection for it.

Cheers.

Keith,

This looks simply amazing! I cannot believe you were able to get the range of surface finishes on one model, definitely adds the professional touch!

I am curious about what type of mill and lathe you have. More pictures too! I wish you had some more towards the beginning of the build when you were doing the block, it's just amazing!

-Nathan

Ramon said:

Keith,
I have only just become aware of your project and would like to say how blown away I am by it .
It's brilliant, just absolutely breath takingly brilliant - even my wife agrees and shes a hard one to impress I simply can't get over your speed of build with the quality produced either. You must be incredibly pleased with the result.

To be able to see work like this is total confirmation of just how valuable a forum can be to us lesser mortals.

Thank you for sharing it, you're an inspiration :bow: :bow: :bow:

Regards - Ramon

Click to expand...

Isn't it though! Great Work Keith!

Dave

keith5700 said:

Thanks for replies. All comments welcome, even constructive criticising ones. Any bits look slightly odd?
Personally I don't like the crank pulley. Looks like it came out of a meccano box.

Click to expand...

It sort of looks as if the crank pulley was installed without the damper behind it.
Just my opinion, but a beautiful robust looking engine like this just looks as if it deserves a manly sized damper behind the pulley. May even help with crank and belt life?

Another belated update.

I've been messing with the oil pump but eventually got it to what I thought would work. I cobbled it up to some pipework and gave it a whirl with the drill. It seemed to pump a reasonable volume of oil, so I rigged up a pressure gauge and tried again. 200psi! I suppose that's the power of hydraulics.
I then put a bleed valve in and ran it at 60psi. There still seemed to be a good oil flow, so, that'll do for that.

I then stripped it and anodised it, and made my common mistake of getting carried away with the dyes.
Still, it doesn't look bad enough to warrant doing it again so I'll stick with it for now.

Then I drilled the block for some oilways, and made the screw on filter. This will be working but will probably just ouse a cobalt magnet to take the ferrous stuff out.

The pipe from the filter to the pump took more hours to make than I dare mention, but it was just about worth it.
The bends are really tight again, like the exhaust, and needed a bender making, and use of the low melting point alloy filler material.

I was fed up one day so I anodised the sump just for the hell of it, but it came out really well, much better than expected. and much better than the blue dye which doesn't seem to be working very well.

Next job is to make some more metal pipes and banjo fittings for getting the oil from the head to the block and the other head.

Someone asked what machines I had. Well I have an old manual Bridgeport, which is great, and a really old Union lathe, which is crap. Some pics of it at the end, with my incredibly untidy workshop. Believe it or not I know exactly where everything is!

My Lord!!!!! That is absolutely gorgeous! :bow: :bow: :bow: :bow: :bow: :bow: :bow: :bow: :bow: :bow: :bow: :bow: :bow: :bow: :bow:
You,sir,are an artist. Makes me feel like throwing my whole shop in the dump. :big: :big:


Ron

I'd say something if I could find the words.....how's this?

th_confused0052


Your shop is cleaner than mine at the moment....looking for a rusty axe to chop my hands off with....

:bow: :bow: :bow:

Phenomenal looking engine. Everything is finished to a T. I can't wait for each installment to see what other piece of jewelry you've hung on the engine.
gbritnell

You do,
Amazing....amazing, work.

You pay attention to detail, which gives model engineering its flavor.
That is what stands out to me in this thread, the time and patience you have to take to chase the details, that is superb model engineering.

Just as the others who do the same chasing of finer details, you guys are excellent engineers, and inspirators.

That phrase "chasing the finer details" just came to me, as I was writing this, what it literally means is, the details can be overlooked and not bother doing them, is easy, to get a project done, but to go the extra steps to do the detail work, is like choosing to chase after the detailing, it means putting forth greater effort to make a model complete.
......something along those lines...

Keep up the great work.

keith5700

As you close in on the finish line the finer details all seem to stand out even more. How you address each of them is amazing. Thanks for letting us look over your shoulder and enjoy the build with you. :bow: :bow:

Cheers

Don

This is just superb.

Unfortunately for me, and a credit to you, Anastasia (spouse) was not (speechless). I was showing her photos from your thread, keith, and she just said to me "Poor fella, what are you doing with your little machines -- You'll never even approach this... You'd better stop this hobby before you get too frustrated..." (in Greek it sounds better... even funny...)

Bravo!

take care,
tom in MA

Hi Keith

I do not know how to express my admiration in a proper fashion to your superb work - so let me just say that I can't wait to see how you do the internal parts !!!!

The last picture of your workshop made me a bit curious seeing a Danish Nilfisk G70 vacuumcleaner - are you from South Africa ? - the only other contry I know of that they where sold ....

Thanks for the replies, they spur me on to aim higher all the time. I'm still on a steep learning curve. 12 months ago I wouldn't have thought it was possible to make something like this. And if I hadn't seen Steve's V8 and George's gearbox then I wouldn't be anywhere near the standard I'm at now.
Hopefully this build will encourage others to get to the next level.

At the end of the day I'm just a bloke in a shed with a few old machines.

Admiral, I can't quite remember where the Nilfisk came from. I've had it years. I'm in the UK.

All, I will try and post more machining pics rather than the finished bits all the time. Although the end bits are nice and pretty, it's not actually much help in seeing how they were created.

Thanks again.

Milling the oil filter mount....



Making the banjo fittings......





Squaring off the oil pipes whilst still full of low melting point alloy.....

keith5700 said:

Hopefully this build will encourage others to get to the next level.

All, I will try and post more machining pics rather than the finished bits all the time. Although the end bits are nice and pretty, it's not actually much help in seeing how they were created.

Click to expand...

Thankyou.

Hi Keith,

I don't have words to say... your work is really incredible!!!

One question: Is it possible to buy this drawings ? I would like to buy!

:bow:

Cheers,

Alexandre

Awesome work!

Simply, incredible.

Hard to put it any other way really, such amazing work, and yes it is a great inspiration. Truly wonderful to see.

One day, one day. I have to tell myself that or I may break down.

Alexandre, you are welcome to any drawings I have, but I don't work rigidly to my drawings. I'll draw so much of a part and then start machining, and I'll do little tweaks as I go along. My drawing file for the engine is just a mess of bits and bobs, and sketches and hand drawings etc.
I only get 1/2 hour at lunchtimes to design and draw, as I haven't got my own CAD system at home, so it's al a bit of a rush job.
Anyway, you are welcome to anything I have, but I would only use it as a guide to design your own engine. Certainly the drawings are nowhere near complete enough to work to, and I know I will never have time to complete them properly.


Some pics I just found:-

Machining the water pump housing....

WOW :bow: :bow:

Brock