UPDATE: 5.5agze 20v coming Spring 2015 by gaijin_rokurunner

By diyauto
( 4 )

4 minute(s) of a 106 minute read

2-18-2013

No class just open track days....racing is expensive and i work full time so just once in a while when i can get it in... Some local drift days to if i have time


2-27-2013


some fresh paint on 25 year old parts and new parts to complement.......almost ready for my new engine






3-6-2013


still setting up fuel maps and timing in all rpm ranges but heres a short video of the engine reving to 5000rpm

View My Video


3-11-2013


Rev limit set to 8000 rpm made 240hp at 8000....map is setup for 9500 tomorrow keep u all posted !


3-12-2013


will do .....will post dyno sheets and video after we are all done...engines on the dyno now....not giving any final numbers yet lol...yeah t50 is long gone.....wont ever touch my car again haha....dont want to do anything over 9500 even though it can probably go to 11000 rather not try and see what the max is at my expense haha...plus Sandy said anything 10000 and up kills the rod bearings and dont care to replace those either...might push to 9800 maybe lol...im thinking 250 bhp will be about 200 rwhp then again im going to be using a better tranny and a carbon shaft which will free up hp loss compared to the t50 and 2 piece shaft...so we will see...my buddy said he read an article a while back about the f20c being one of the best 4 cylinders made and had 125hp per liter until Ferrari came out with something in 2010....240 on a 1800cc gives my engine 133hp per liter ...and 250 gives it 138hp per liter....id say thats pretty damn good!


Bad news unfortunetly the engine had a valve problem on the dyno today but made 240hp and 155 ftlbs torque at 8500 before it was shut off...Sandy at the shop said the lowest torque figure was 140 ftlb which is outstanding...he also said with a dry sump, longer runner intake and a little more c/r this thing would of made 280hp range bo problem he was very impressed...anyhow we suspect incorrect valve to piston clearence in the number 2 cylinder as one of the valve hit a piston over and over till it snapped which in turn tore up the piston and other valves...heading to the shop tomorrow to see the damage...they are investigating if its a part problem which would mean coat to rebuild is out of my pocket or builder error which they would cover everything free of charge...called Zeke down at Ferrea and he told me the valves i have are top of the line before titanium and are not made to break but bend and that fact that one broke means it hit the piston continuously till it snapped again meaning inproper valve clearence...anyhow keep u posted will probably take a while to rebuild since everything is custom more then likely need a new head which will require a whole new port and valve job as well as flow benching then if the cylinder wall is trashed a whole new block...no fixing 83mm bores... On a good note made more hp then the f20 and f22 as well as a FA so my money is well spent in my book....pictures to come



Comments

A lot of detail!

Posted by Diggymart on 3/24/20 @ 4:53:18 PM