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[frank]

they just stop the pin shifting instead of circlips eh, widely used i believe, VW beetle,s etc, the CG are 18mm interference fit rods and the toyota 18mm floating eh

 

[Stani1029]

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[frank]

Theres no circlip in the glanza pistons i have so assumed its a press fit too....

ahh, maybe just the aftermarket glanza rods are fully floating then eh (the ones on ebay)
are the pistons full skirted stani ? or slipper ? (slipper,s are awkward to mount in a press eh !)

 

[Stani1029]

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[frank]

there not fully skirted no

you might have fun removing them i ended up drilling and splitting my corsa rods, to get the corsa pistons off safely

 

[Stani1029]

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[frank]

it looks like the toyota shells are thinner stani (1.5mm thick), so no machining needed ?

 

[Stani1029]

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[frank]

Any idea of the cg crank journal diameter?

40mm

 

[Stani1029]

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[frank]

Thats close though aint it? (40+1.5+1.5= 43) the big end diameter i assume is minus the bearing thickness

depends if the listings posted up are outer dia or inner dia eh stani, i saw one online that said 46 for 5te and 43 for 4te iirc.
if the glanza crankpins are 43mm its bad news

 

[Stani1029]

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[Enuo]

15 microns we have a tolerance of 20 microns when calibrating machines that make turbine blades for jet engines...

 

[Stani1029]

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[frank]

nice one stani a machine shop will soon take a lick off each side on a surface grinder eh

 

[Enuo]

all 4 rods is probably less than an hour to machine, so i'd be betting on about £50 for the work.

 

[Stani1029]

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[Rust bucket (kmt)]

Go on mate, I need to see this unfold.

 

[Enuo]

Starlet rod, corsa piston?

 

[Stani1029]

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[frank]

Enuo ive thought that but i dont think the corsa pistons will be tall enough or the correct compression ratio.

4mm short, but flat topped eh stani, mine was a bit laggy at mallory tbh (7.5 or 8 :1 c/r is just too low nowadays) i,m gonna try it with a CGA3 crank next, which should raise it to about 9:1 iirc
and 1.0 or 1.2 corsa,s have bugger-all aftermarket stuff (forged pistons etc) as do K11,s

 

[Stani1029]

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[Stani1029]

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[frank]

I hate that i cant edit posts now lol what CR do you think i should plan for, i was thinking 8.5:1?

sounds ok for high boost eh stani, this stock CGA3 is a lot more snappy than the low comp corsa one was, i,ve got 2 freshbuilt high comp (1.0 piston) engines i want to try out next week, that,ll test out the new hybrid fire-rings eh

 

[Stani1029]

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[Stani1029]

Doh! Meant to ask have you fitted the new fire rings above and below the original gasket?

 

[Stani1029]

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[frank]

Spoke to agra and they said the conrods will work fine so ive bought and paid for a set of forged conrods and arp big end bolt set they quoted £20 a side to remove 0.5mm off the rods so 8 sides to do im looking at £192 inc vat :O so in total £557 for the rods to fit. Might see if i can save some money on them somewhere

jeez ! they know how to charge stani, they will lay all 4 onto the magnetic table and surface grind the 4 together), and under the gasket on the closed block engine, and over the gasket on the other engine mate (both 1.0 piston 1275,s)

 

[Enuo]

thats extortionate mate, find a place that charges by the hour, I wouldn't pay more than 100 for that.

 

[Stani1029]

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[Noddie]

jeez ! they know how to charge stani, they will lay all 4 onto the magnetic table and surface grind the 4 together), and under the gasket on the closed block engine, and over the gasket on the other engine mate (both 1.0 piston 1275,s)

do you think it will change the CR that much then? when compressed how thick do you estimate the HG will be?

 

[frank]

do you think it will change the CR that much then? when compressed how thick do you estimate the HG will be?

the 2 steels layers in the mls CR10/12/14 gaskets are 10" thou/.25mm when crushed ed (20" thou uncrushed) but when torqued down it gets crushed into the CG gasket, so same thickness, just more pressure where its needed
an alloy head has some degree of "give" ( a lot more than a cast iron diesel head for instance) ,and the highest clamping forces are down the 2 sides eh, i tried a 3" thou feeler all around the head/block joint, so the oil and water galleries should be fine, time will tell

 

[Noddie]

the 2 steels layers in the mls CR10/12/14 gaskets are 10" thou/.25mm when crushed ed (20" thou uncrushed) but when torqued down it gets crushed into the CG gasket, so same thickness, just more pressure where its needed
an alloy head has some degree of "give" ( a lot more than a cast iron diesel head for instance) ,and the highest clamping forces are down the 2 sides eh, i tried a 3" thou feeler all around the head/block joint, so the oil and water galleries should be fine, time will tell

You seem to think of everything!

 

[frank]

You seem to think of everything!

we shall see no doubt ed.
and you should,nt be DET-ing ringlands now that you have the nistune board in surely stani ?? is your sparkmap set anything like this ? http://www.micra.org.uk/threads/apexi-s-afc.56206/ (loads of timing pulled @ high load/boost)

 

[Glen]

The thing is that stani played with the map so it might have no det'd if he had left the map on that the mapped made but since he tweeked it, it might have been too much for the engine.

 

[Stani1029]

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[frank]

Mines was more like the top one frank yeah and then after armando helping me reach 6900rpm i retarded most of the map by 2degrees more if i remember correctly

the top one is the N/A one eh stani ! you,ll be DET-ing your new forgies too

 

[Stani1029]

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[SirChris]

I realised that once you linked the above lol the mapper had all the right gear (obviously) so possibly it was that extra 600rpm i gained and me ####ing about. And i wont be putting boost near the next engine until its mapped (like before) This time ill be able to show him how to get around the issues he had last time

Get some knock ears stani.

 

[frank]

Get some knock ears stani.

thats the problem aint it, k11,s dont have a knock sensor or MAP sensor, so that load table is critical

 

[pollyp]

Ed bolted an external knock sensor to my block and plugged into his nistune laptop when he tuned mine on the dyno

 

[Stani1029]

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[Stani1029]

Got the passenger footwell leak, dripping from behind glovebox

 

[Stani1029]

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[frank]

the CGA3 (72mm bore) H/G has the same dia fire rings as the other CG,s stani

 

[Stani1029]

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[h701micra]

I wouldn't recommend it, that's alot of work you've got planned if your wanting to match the head up with the bore. A slight bur in your work would ruin the head. Plus you'd be changing the combustion chamber shape

 

[frank]

do you mean open up the quench steps stani ! how about O ringing the block like dan ? http://www.micra.com.au/community/message.php?messageid=83002

 

[Stani1029]

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[h701micra]

I had something similar done on a cylinder head before (just not matched to the bore completely)

So your not doing it yourself?