ryan22laird Posted August 29, 2014 Share Posted August 29, 2014 Hi guys just got my forged 4e engine built again the spec is wiseco 74.5mm forged pistonsScat forged rodsACL racing big ends, mains & thrust bearingsathenna 1.2mm metal headgasketcrusie valve springsvalves lapped inuprated valve stem seals Toyota oil pumpToyota water pump genuine toyota gasket kit Magnecor ignition leadsNGK iridium heat range 8 spark plugsJust wondering what bhp can a run this engine at safe it was 275 before Quote Link to post Share on other sites
H_D Posted August 29, 2014 Share Posted August 29, 2014 No such thing as "what bhp can it be ran at safely", It comes down to how the good the map is.a forged engine can go bang with a shitty map running low BHP. Quote Link to post Share on other sites
5e colin Posted August 29, 2014 Share Posted August 29, 2014 135 bhp :) Quote Link to post Share on other sites
_shaun_ Posted August 29, 2014 Share Posted August 29, 2014 to run it safely fit a sheet of glass to the top and use it as a coffee table. other than that just pick power your happy with and aim for that Quote Link to post Share on other sites
aaddzz123 Posted August 29, 2014 Share Posted August 29, 2014 As H_D said really. If you have a good map you should be fine with anything that a 4e can spool really. I've known of a forged 4e to melt the bearings to the rods and damage a piston but that's because the oil pump failed. Quote Link to post Share on other sites
SkevosEP91 Posted September 28, 2014 Share Posted September 28, 2014 with these exact parts as yours i have run my engine at 23 psi (1.6 bar) and the car made 263whp on a shitty map on an S-afc 2 so i think the engine can make a little more safe hp with a proper map on an ECU!!!! Quote Link to post Share on other sites
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