Very truehttp://www.ebay.co.uk/itm/Engine-EC...arts_Vehicles_CarParts_SM&hash=item417b3dd195
You doing a 1.6 or are you trying to bodge turbo a 1.3 hoping the spark map is tamer? Because there's no actual proof on the web that I've found that says that it is... the GA's combustion chamber was designed specifically to prevent predetonation for poor fuels, so it#s unlikely that it would actually need a tame spark map...
yeh, thats what i said to welly, clean and green = aggressive sparkmapAs I said, the pentagonal combustion chamber is designed specifically to prevent detting, CG is designed to burn clean eh (CG= Clean Green)
Don't understand what you're saying? :/seems strange that you dont hear of GA.s and SR,s DETing pistons tho aint it, yet me, stani, chris and euromicra have DET,d about 25 piston ringlands between us ??
some of the GA16 forum guys just fit the SR ecu and injectors and run boost for years without problems iirc
CG/GA = same shape combustion chamber, same 9.5 C/R, same piston crown, same 8mm/222deg cam profiles andy, and how come stani ran 8psi for months np, with a GA ecu ? http://www.micra.org.uk/threads/ga16-throttle-body-on-1-3.58620/#post-645135You might be right, but there are enough differences between the engines that it could be explained by things other than spark map. Compression ratios, combustion chamber design, piston design, cam profiles... lots of possibilities. Only a side by side comparison of the tables would show either way.
Not 100% agreeing on the combustion chamber shape... need two side by side and make some moulds to compareCG/GA = same shape combustion chamber, same 9.5 C/R, same piston crown, same 8mm/222deg cam profiles andy, and how come stani ran 8psi for months np, with a GA ecu ? http://www.micra.org.uk/threads/ga16-throttle-body-on-1-3.58620/#post-645135
same pent roof and quenchstepsNot 100% agreeing on the combustion chamber shape... need two side by side and make some moulds to compare
eh ? same HP/L aint they ?GA's must have an awesome cam profile then to make that extra hp/l over the CG's...
the coilpack CG,s are the same as GA,s tho andy 60/85/99hp ?75/1.3= 57.7 hp/l
100/1.6= 62.5 hp/l
And the GA head is ridiculously restrictive (same exhaust valve size as CG iirc) and same exhaust pipe diameter too
is that the VE andy ?Hmm... where the GA is 66% and the CG is 80% you'll need to balance that too for fair comparison
is that for a 1275cc andy ? and i get the coilpack CG,s to the same 62hp/l as the GA,sEdit: CG13 would need to have 81.3hp to have same hp/l as a GA16
so not down to the cam profile thenYeah but you can't use a GA ecu on a coilpack micra so it's not a fair comparison
i dont buy those figures personally, you can have such a difference in VE and also get the same hp/lAnd yeah, GA's supposedly have a VE of 66% vs 80% for a cg because the head flows so badly on a GA
Coilpack micras have a different intake and exhaust to a normal CG and have a different cylinder head no?, would only be fair to compare it to the USDM 115hp GA,so not down to the cam profile then
Fixednah same spec, and you,re including vvl ?? how about CGA3 alpha 101hp 1324cc
Err... yes?is that the VE andy ?