I’m leaning towards that being the smart way to go For sub 700hp, big cost savings and guaranteed to be properly assembled/ tolerances in check, etc.. thanks for your input.
N54 WHP, Boost, longevity ?
- Thread starter SlowE93
- Start date
103 000km block here, been tuned since it had 37 000km.
First JB4 fairly conservative map 1 for maybe 10 000km, then quickly ramped up to map 7 with all the supporting mods and E85 blend.
Now, i've been running the Hydra HP800 for 33 000km, first at 16-17psi straight E85 for maybe 20 000Km, aftert that, with the VCV tables, 21psi straight E85.
Car ran a 5.99s 100-200 with that boost, and no signs of weakness so far. Engine is not the healthiest as it burns through a fair amount of oil, 1L every 1500km roughly, but it has been that way for a long time and the compressions are alright.
I really don't intend to run more than 21psi whatever happens, what i do intend to do tho, is get a N53 head with cams.
Assuming i can get the neccesary fueling, 21psi with a very nice flowing head and cams should net close to 700hp.
If i can't get the fueling, i'd just run the engine at 16psi with the N53 head, should be fairly close to the power i have now, with more torque and better drivability.
First JB4 fairly conservative map 1 for maybe 10 000km, then quickly ramped up to map 7 with all the supporting mods and E85 blend.
Now, i've been running the Hydra HP800 for 33 000km, first at 16-17psi straight E85 for maybe 20 000Km, aftert that, with the VCV tables, 21psi straight E85.
Car ran a 5.99s 100-200 with that boost, and no signs of weakness so far. Engine is not the healthiest as it burns through a fair amount of oil, 1L every 1500km roughly, but it has been that way for a long time and the compressions are alright.
I really don't intend to run more than 21psi whatever happens, what i do intend to do tho, is get a N53 head with cams.
Assuming i can get the neccesary fueling, 21psi with a very nice flowing head and cams should net close to 700hp.
If i can't get the fueling, i'd just run the engine at 16psi with the N53 head, should be fairly close to the power i have now, with more torque and better drivability.
Omar and I are in the process of tuning my cammed N53/HP800 mutt now on straight 93. Having driven a couple cars with big hybrids and one ST converted E92, I can say the N53 head makes ALL the difference.
Engine out, head off was a great time to do all the maintenance, add a hub lock, and change the bearings. As well as I take care of my car it's amazing how many leaks we found.
Engine out, head off was a great time to do all the maintenance, add a hub lock, and change the bearings. As well as I take care of my car it's amazing how many leaks we found.
Nice to hear you are happy, hope i will be too.
I have been using Renewable Lubricants 5W40 Biosyn Extra for a few years years now. I use to lose about a quart every 3-4k but with the biosyn, I no longer need to top off between changes. Its regarded as one of the toughest oils around when it comes to E85 fuel dilution and sheer strength , ( very important for turbo engines). I was weary of a BIO based veggie oil but those fears turned out to be unfounded. Blackstone reports showed much better TBN and wear than the Motul Xcess I had ran previously. RLI oils use antimony as their key AW additive, expensive but effective from what research I've done and personal experience. I will post Blackstone reports when I find them. I run GC's @ 25psi with e85 and typically change oil every 3-4k miles but will be going to 5k intervals based on Blackstone's advice. RLI still had a lot of life left in it on my last change @3,800 miles.
