quad cam m70

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Re: quad cam m70

Postby g73a » 05 Nov 2017, 20:36

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Secondary air adaptor plates cut off and tapped to blank them off. Done that rather than modifying the heads so the engine is still totally standard.


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Back on the heads. Just need some m14 cap heads and copper washers.

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Starter adaptor machined.

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Fitted to the engine, just needs the correct gear to suit the ring gear.


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Part of an itb with a Siemens deka fitted.

The print failed slightly, it should have a full Bell mouth on the top.





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Re: quad cam m70

Postby g73a » 06 Nov 2017, 22:14

Fitted to head

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Looking down at the (horrible carbon coated) inlet valves

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Something I’ve started drawing tonight, I like mechanical linkages

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I think they’ll be some kind of plenum chamber around the bell mouths that’s fed from a pair of cone filters tucked somewhere behind the headlights.

I wanted to use itg sausage filters straight on the itbs but there just isn’t enough space between them or the rocker cover.

A massive lump of en19 turned up today so I might try turning it into a flywheel tomorrow evening.


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Re: quad cam m70

Postby g73a » 08 Nov 2017, 21:27

Take a 26kg lump of en19 and shave a few bits off.

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That’s the outside done, inside and a bunch of holes to follow.

Finished product should be 4.6kg.





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Re: quad cam m70

Postby g73a » 10 Nov 2017, 21:19

Nice and light.


A few holes and a step for the cover to locate and we’re all done.


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Re: quad cam m70

Postby g73a » 12 Nov 2017, 12:56

Sautéed.

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I’ve refrained from adding the clutch step and mounting holes until I’ve got the clutch cover in my hand.

Ap are making a new 3 plate ceremetallic clutch which will hold 1200nm and is street drivable (ish) but they’re not starting manufacturing Till early next year so just got to wait on that one.

Main focus now is on the throttle bodies, should have that worked out before the end of the week so can start manufacturing next weekend.






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Re: quad cam m70

Postby g73a » 12 Nov 2017, 23:34

Pretty much finished throttle body setup.

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Fuel rail is split into 2 sections, with the lower portion being rotated depending on bank 1 or 2.


The 2 banks are driven from 2 separate shafts, to drive these equally, I’m going to redesign a thing I made for another project.

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It’s a drive by wire actuator that uses bits from some motorbike throttle bodies in a billet housing.

I’m going to add another stage to the gearbox to give 2 counterrotating outputs.

This should tuck into the centre of the v at the back of the engine.

I’m currently printing a bunch of this stuff to check fitment.




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Re: quad cam m70

Postby g73a » 19 Nov 2017, 08:49

can't remember if i mentioned this before, but i bought a shit 328ci to use as a first build / mechinical test bed.

it was so cheap because the rear arches are blown through and the subframe is hanging off the car :))

i've cut out the boot tub to look at the subframe mounting points and understand how im going to repair it.

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it's do able, just need to buy all the bits so i can smash it out in a weekend at work. drop all the rear suspension / subframe, cut out the rotten section, make a new piece of panel, weld it in, plate all the subframe pickup points with a reinforcement kit, cover everthing in dinitrol and fit the drivetrain back in. ive bought a new subframe and arb, so i can prebuild them with bushes / droplinks and swap out the crusty stuff when it gets put back together. i might weld the diff up at the same time for shits and giggles. its getting a quaife atb anyway so i don't really care.

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battery tray and area was crusty as so scoured it all, put in a new tray (was only like 20 quid or something, bargain!) and covered in rustproof paint.

itbs and stacks coming off the machine
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started doing some engine wiring, this is something i want to do neatly, but on a budget to start with. i've built several 'milspec' harnesses, but when you start using service loops, dr-25, shrink boots, souriau connectors, atum and epoxy sealing joints the money and time it takes is a bit mental. i can always revisit this later and do a better job, but for now it just needs to be functional and reliable.

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starter motor fitted, with correct gear and the origional wiring even fits!

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started playing with tyre options... its gonna be wide :ymdevil:

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suggestions on rear arch extensions welcome.


on a bit of a mission at the moment because there's been talk of a europe trip at the same time as we go to lemans next year.
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Re: quad cam m70

Postby g73a » 21 Nov 2017, 21:38

Aux belt routing.

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The only thing on there now is the water pump and alternator.

Power steering will be an mr2 or an a class electro-hydraulic pump.


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Shot down the inlet, sans the actual bell mouth which is a separate bolt on part.

Port matching is excellent.

I’ve done it this way so that I can play with inlet trumpet lengths and bellmouth design independently of each other.

I’ve got a flow bench at home so I can test various different combinations and see what works best.





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Re: quad cam m70

Postby RayB » 22 Nov 2017, 07:13

I'm totally lost now but it certainly makes interesting reading!
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Re: quad cam m70

Postby M60NJP » 22 Nov 2017, 08:19

RayB wrote:I'm totally lost now but it certainly makes interesting reading!


Thicko!............

cockneyrebel will be along soon to spell it out for you!
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