200 replies to this topic

[leevx2.2]

Hmmm, throttle bodies



sorted out the wiring looms, so now they look factory fitted, not a good pic to see them

vocky where you get the longer trumpets for the t/b and what is the benefits of longer ones looking good

[siztenboots]

pneumatic valves , ala Renault F1 ?

can see the water pump there, there was some guy on here "Adam" at the national that had replaced it with a electric one ?

Edited by siztenboots, 18 November 2008 - 04:06 PM.

[LY_Scott]

[VIX]

That is all way, way too shiny!!

[alanoo]

pneumatic valves , ala Renault F1 ?

can see the water pump there, there was some guy on here "Adam" at the national that had replaced it with a electric one ?

Just a quick correction,

the "special" valve driving Renault F1 had a few years ago was magnetic, also reffered as camless as each valve was driven by a magnet

Pneumatic "valves" are in fact pneumatic springs, almost all (if not all) F1 teams are using this as simple springs could not work at 20000 rpm
so this one is not Renault F1 specific

[vocky]

vocky where you get the longer trumpets for the t/b and what is the benefits of longer ones looking good

they made little difference to my phase I engine, perhaps a little mid range, but should help my phase II

they are actually 45 dcoe trumpets modified to fit the itb's

pneumatic valves , ala Renault F1 ?

can see the water pump there, there was some guy on here "Adam" at the national that had replaced it with a electric one ?

you mean no valves

I decided against an electric pump this time, I believe 'Adam' had a problem where to locate the pump but has it sorted now. I have figured out a different method for installing one, so could/should have fitted one

That is all way, way too shiny!!

[vocky]

thought I would show the difference between the cam lobe profiles of a saab turbo cam and a comp cams stage 3

saab on the left, stage 3 on the right

[siztenboots]

I need some trick cams for my zlet , anyone got an old 20xe inlet spare ?

Edited by siztenboots, 30 November 2008 - 11:24 AM.

[slindborg]

I need some trick cams for my zlet , anyone got an old 20xe inlet spare ?

whore it up on MIG or vauxsport for an inlet

[mandarinvx]

A few more cam pics, just for the sake of it

Standard


Comp Cams Stage 1


Side by side (though hard to compare at this angle )

[vocky]

I have had the valve seats enlarged for the +1mm wasted stem valves and also the head skimmed

next job was to fit the new valve seats, modified oil seals, double valve springs and titanium retainers. I checked for coil bind by careful measuring and it all looks good

next job is to fit the head and set up the timing

[NickB787]

Don't you ever stop

[vocky]

next job was to fit the head, set up the GM vernier sprockets. There appears to be a problem with the pressure relief valve sticking on some z22se oil pumps so I fitted a brand new oil pump.



next was the exhaust manifold, I have rewrapped it as the heat was starting to affect the clam



new gasket for the webcon throttle bodies



and all back together

[speedster]

next job was to fit the head, set up the GM vernier sprockets. There appears to be a problem with the pressure relief valve sticking on some z22se oil pumps so I fitted a brand new oil pump.



next was the exhaust manifold, I have rewrapped it as the heat was starting to affect the clam



new gasket for the webcon throttle bodies



and all back together

Hi vocky. Great work! Question - How easy is it to get at the oil filter with the iTBs installed?

[vocky]

IMPORTANT

if you fit a LSJ / SAAB / Z20NET head you must not use z22se spark plugs anymore

the LSJ / SAAB / Z20NET (sandcast) heads use a 'flat seal' spark plug rather than the z22se (lostfoam) heads 'taper seal' spark plug. Also the z22se spark plug sits 5mm further into the combustion chamber and can touch the piston

luckily for me I cranked the engine over by hand and felt the 'contact', so glad I never tried starting it

I have fitted some Saab Iridium plugs for now and it started first time

[Crazyfrog (Fab)]

very colorful .......just in time for x mass

you'll have to teach me mechanics I'll teach you cooking lol
well done and keep going

[vocky]

Hi vocky. Great work! Question - How easy is it to get at the oil filter with the iTBs installed?

no more difficult than with a standard inlet, perhaps a little easier

[vocky]

you'll have to teach me mechanics I'll teach you cooking lol
well done and keep going

stick to the cooking it's more enjoyable than mechanics, especially at this time of year

[techieboy]

luckily for me I cranked the engine over by hand and felt the 'contact', so glad I never tried starting it

Phew! Close call there. Thank God you did turn it over by hand and are sensitive enough to have felt the contact. I'm pretty sure I'd have just happily fired it up.

Great news that it's up and running. When are you back to Northampton to get the map sorted?

[speedster]

Hi vocky. Great work! Question - How easy is it to get at the oil filter with the iTBs installed?

no more difficult than with a standard inlet, perhaps a little easier

I'm considering a remote oil filter set-up for my build

CLICKY