yano28 wrote:yeh i may be wrong but i've been under the belief the gr motor was stronger. Gpx's can suffer from oil starvation cos of the high speed cams, have a slightly higher compression than gr 6a12's, plus i've seen a lot of people's posts on here saying they need a new gpx motor. Hardly see gr engines dying. Like i said, i could be wrong though.
The debate about gpx's being turbo'd has been covered many times before.. I've researched the differences between our motors and the hondas regarding turbocharging & my conclusion is that sadly the honda motors have been better built to cope with forced induction & that because the vtech is electronically controlled, it's easier to factor in. I know there's a few turbo'd gpx's which run around 5psi but majority have come that way from japan. I'd absolutley love a turbo'd gpx though
Ok well im the new tubo gpx'er havnt started yet but everything is almost ready.
A) Honda engines are a lot stronger ( i might get flamed for this meh my opinion)
B) if the oil return line from the turbo is set up right you hsouldnt have any oil starvation issues since its gravity forced fed...However im paranoid so as we speak some mechanical engineers at RMIT are making me a small pump that goes inbetween the turbo and oil return line and is now forcing oil down (being designed now) they are just determining with my tuner at what rate the oil should be pumped in and then out...
C)Gpx engines break more because people re the hell out of them more to get to MIVEC
D) People turbo GR enginers cus they cbf doing a decompression head gasket on a gpx..
E)Moving your compression from the stock 10:1 -> 8.5:1 is done with a decomp gasket and you dont run the risk of blowing up anything on 6psi boost.
F) My tuner who i spoke to who works for RAJAB Performace said they have the Evolution factory tune settings, and have also said that they reccomend having the high profile cams always engaged or engaging at 2500rpm. getting a tuner who knows what there doing= Engine living-------tuner doesnt know what there doing = BLOWS UP
Follow all the above you turbo your GPX Safely.