bodhi03 New Member 15 Member For: 3y 2m 17d Posted 30/09/21 08:18 PM Share Posted 30/09/21 08:18 PM hey guys, was just wanting to ask if its risky to push more power out of my 06 bf mk1? im running 16psi on stock turbo w a flapper mod pushing 460 hp, around 217k kms on engine, but have wanting to upgrade the turbo to potentially a pulsar gtx and get an external waste gate. with the upgrades I was aiming for at least the 500 hp mark and maybe 17 or 18 psi to achieve that. is there a risk to any of this as I know mk1 have weaker internals e.g rods. if anyone can give some insight I would appreciate it. cheers :) Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 29,040 Member For: 16y 8m 7d Gender: Male Location: Melbourne Posted 30/09/21 10:43 PM Share Posted 30/09/21 10:43 PM Your stock turbo can easily make 500hp (or ~373kW in the measurement we actually use all over this site) at the wheels... you're already well above the safety area of the stock internals weak-rods engine, though with 460hp (~343kW) if you're making that at the wheels, so bottom line is, if you've got the budget for an engine rebuild, send it Link to comment Share on other sites More sharing options...
Tom Tucker Donating Members 669 Member For: 5y 5m 17d Posted 01/10/21 02:05 AM Share Posted 01/10/21 02:05 AM Welcome mate. I suspect if you run e85 and ramp the boost and power on progressively it might be ok. The stock turbo is superior to a pulsar or anything else for that matter, up to around 440rwkw. Don't touch it unless it is damaged. Link to comment Share on other sites More sharing options...
bodhi03 New Member 15 Member For: 3y 2m 17d Posted 01/10/21 05:41 AM Author Share Posted 01/10/21 05:41 AM 7 hours ago, k31th said: you're already well above the safety area of the stock internals weak-rods engine when u mean well above the safety area, do you mean pushing 343kw is already a risk with a mk1 engine? Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 29,040 Member For: 16y 8m 7d Gender: Male Location: Melbourne Posted 01/10/21 06:01 AM Share Posted 01/10/21 06:01 AM yep, anything above 300rwkw is pushing the stock skinny-rod motor. Link to comment Share on other sites More sharing options...
bodhi03 New Member 15 Member For: 3y 2m 17d Posted 01/10/21 07:38 AM Author Share Posted 01/10/21 07:38 AM is there any way to minimise the motor from sh*tting itself? like for example more cooling or whatever. Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 29,040 Member For: 16y 8m 7d Gender: Male Location: Melbourne Posted 01/10/21 07:44 AM Share Posted 01/10/21 07:44 AM nah, it's cylinder pressure that bends conrods... that pressure barely changes with any sort of cooling protocol unless you use a completely alternate fuel, as the higher the boost you run with the same size turbo, the more pressure/heat is generated in the intake charge. Link to comment Share on other sites More sharing options...
bodhi03 New Member 15 Member For: 3y 2m 17d Posted 01/10/21 10:44 PM Author Share Posted 01/10/21 10:44 PM I have a e85 tune but run 98 pre much daily, would that make any difference? Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 29,040 Member For: 16y 8m 7d Gender: Male Location: Melbourne Posted 02/10/21 12:39 AM Share Posted 02/10/21 12:39 AM E85 does reduce cylinder pressures, but then you compensate by adding extra timing which increases it again, but E85 does run cooler than 98 so it is better (for a bunch of other reasons, too haha). Link to comment Share on other sites More sharing options...
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