Regany New Member 22 Member For: 5y 6m 9d Posted 13/05/20 06:55 PM Share Posted 13/05/20 06:55 PM Hi guys, how much boost/kw can the stock f6 head studs handle when will the head start to lift? Cheers. Link to comment Share on other sites More sharing options...
camo86T Silver Donating Members 1,810 Member For: 10y 9m 29d Gender: Male Location: SW Sydney Posted 13/05/20 08:03 PM Share Posted 13/05/20 08:03 PM one for @JETURBO... Tuner skill/experience makes a big difference in this area IIRC Link to comment Share on other sites More sharing options...
JETURBO ...JD TUNING ADELAIDE... Gold Donating Members 23,708 Member For: 16y 6m 10d Gender: Male Location: Adelaide Posted 13/05/20 10:10 PM Share Posted 13/05/20 10:10 PM There’s no hard fast rule but I’ve had many over 500rwkw with factory head bolts and the furthest I’ve personally tuned one is 566rwkw @ 27.5 psi and still didn’t lift. It’s about tuning mostly but hardware set up following. This is an area workshops make some easy money off customers but on the flip side you get something for your money so it’s not exactly a scam either. It’s the justification that’s the grey area .... At the end of the day go with whatever your tuner tells you as if you don’t you can’t complain when it lifts, if they’re competent, your car can be set up accordingly and on your wallets side You don’t need them for upto 500rwkw @ 22psi on a 35 frame IWG turbo on E85 when tuned accordingly as a guide 2 Link to comment Share on other sites More sharing options...
gaz097 Bronze Donating Members 1,752 Member For: 13y 4m 20d Posted 13/05/20 11:31 PM Share Posted 13/05/20 11:31 PM Would you have the timing at MBT the whole way through the curve, or just at peak power. Providing 22psi the whole way through Link to comment Share on other sites More sharing options...
JETURBO ...JD TUNING ADELAIDE... Gold Donating Members 23,708 Member For: 16y 6m 10d Gender: Male Location: Adelaide Posted 14/05/20 12:42 AM Share Posted 14/05/20 12:42 AM To generate a target power outcome other influences need to be in a correct application. Any tuner who’s done R&D will know how to achieve this result Im not going to say exactly how it’s done as someone will try it and bugger it up then it’s my fault but I’ve put all the pieces out there on this forum over the years Link to comment Share on other sites More sharing options...
gaz097 Bronze Donating Members 1,752 Member For: 13y 4m 20d Posted 14/05/20 01:26 AM Share Posted 14/05/20 01:26 AM A simple no would have been fine Link to comment Share on other sites More sharing options...
JETURBO ...JD TUNING ADELAIDE... Gold Donating Members 23,708 Member For: 16y 6m 10d Gender: Male Location: Adelaide Posted 14/05/20 01:44 AM Share Posted 14/05/20 01:44 AM Making a correct statement is far more important 1 Link to comment Share on other sites More sharing options...
gaz097 Bronze Donating Members 1,752 Member For: 13y 4m 20d Posted 14/05/20 02:19 AM Share Posted 14/05/20 02:19 AM You don’t need them for upto 500rwkw @ 22psi on a 35 frame IWG turbo on E85 when tuned accordingly as a guideTo the op. With the size turbo to achieve the magic 500, you will be giving up alot of area under the curve, that is available with a built motor.And the question what is stronger a FG rod, or a stock headstud most shops believe the rod, jet believes the stud, or at least the gap is closer then we think/told by the shops. Link to comment Share on other sites More sharing options...
Quincy Oconnor New Member 6 Member For: 4y 10m 4d Posted 21/05/20 05:54 AM Share Posted 21/05/20 05:54 AM my copper head gasket and stock bolts are holding up fine at 14. ive heard a lot of mixed results with not doing head studs Link to comment Share on other sites More sharing options...
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