UPDATE: 5.5agze 20v coming Spring 2015

[vovinamer]

Dope build.. Looking forward to seeing the numbers etc. question... How streetable do you think this engine will be? Idle etc... Especially with the aggressive cam setup..?

[ethergore2]

Dope build.. Looking forward to seeing the numbers etc. question... How streetable do you think this engine will be? Idle etc... Especially with the aggressive cam setup..?

I second that question.

[gaijin_rokurunner]

Should be very streetable...lots more low end torque to make up for the cams and lack of vvt...idle is actually very very stable and suprisingly smooth, im going to test the ICV to see if it gets any better but dont really need it....only reason for it not to be a daily driver is the fact that it only runs on 110 octane and as you know you cant just pull up to the pump to fill her up!

[The Robot Cow]

This build is just so damn cool!!!
To someone like me who just got started with the ae86 last year, this is a true inspiration!

[gaijin_rokurunner]

Well glad it can inspire you guys new to the world of the most expensive old school car and engine out there lol.....this is my 20 years of dealing with these cars going out with a bang build...engines back on the dyno...results monday (hopefully as long as nothing else goes wrong again)

[Autonerd]

Amazing build! What class will you race this car in?

[gaijin_rokurunner]

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

[ronny]

this is my 20 years of dealing with these cars going out with a bang build...

amen brotha

[gaijin_rokurunner]

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

[ajadorifter]

Bump

[NC Panda]

beyond excited to hear what kind of numbers this thing puts down

[gaijin_rokurunner]

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

[gaijin_rokurunner]

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

[GtsTone23]

Nice job Tony, the motor sounds Beast!!

[oldeskewltoy]

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

Very good....

I'm planting about 170 @ 8000... and that is my peak. I anxiously anticipate the engine dyno sheet, as well as the final dyno from the wheels.

[MisterJerk]

this ish is ridiculously awesome! Good Job!

Taking it to 10k after the 9k dyno run?

I would like to see the diff between the engine dyno and the chassis dyno. I would have liked to see a before and after dyno with the t50 and the 6 speed tranny. but i am sure this engine will never see a t50.

[morgan]

i think a t50 would be scared shitless of this beast. it would break itself before being bolted up.
nice work Tony, let us know the #'s after the 9k run please

[gaijin_rokurunner]

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!

[gaijin_rokurunner]

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

[MisterJerk]

what in tarnation! I'm excited to hear about the 252 HP and 164 ft/lbs, but dangit, murder she wrote on that head. fffffuuuuuuu! congrats on the most ridiculous NA 4age build i have ever seen.

[oldeskewltoy]

Bad news unfortunetly the engine blew on the dyno today but made 252hp and 164 ftlbs torque at 9000 before it went boom...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

Good luck on the future.... 164#/ft is pretty good.

Besides the piston to valve clearance, I'd also check the valve springs... one reason the Atlantics go over 10,000 is because the valve springs are more than capable (dual), and it seems odd that one piston was machined incorrectly... or one valve was mis-seated. It seems more likely that a spring was not up to the task... floated... and BOOM.....

[gaijin_rokurunner]

Ok first let me correct the numbers posted yesterday......engine was only revved to 8500 rpm at 8600 it committed suicide and the numbers at 8500 were 249hp and torque peaked at 155 ftlbs at 7300 rpm...... now this is still with a rich A/F mixture and 32 degrees of timing....final tune will have 37 or 38 degrees like the atlantics and a leaner A/F mixture they were just being safe getting it all the way up to the max redline which will be 9500 then adding timing and playing with the A/F mixture until they were comfortable prior to the final power run....Now the carnage....yeah looks pretty bad but could of been a lot worse and good thing is its all fixable...and the shop is covering it since it was their over-site during the build....the determination of the issue...CP cut the relief pocket angles improperly and when QRE cut the reliefs deeper they didnt check that so all 8 exhaust valves were rubbing on the wall of the relief half way down....its very minimal but enough to bend all 8 and one must of got tired of being pushed around and blew its top...literally.. anyhow QRE is going to weld up the combustion chamber to fix it...ordered a new piston today and pulled all the valves and sent them to Ferrea for inspection and replacement..im assuming 8 exhaust and 3 intake valves will be needed. Once the piston is back the reliefs will be properly cut on all 4 pistons and sent back to swain to be coated again. once back everything assembled and we can do a short break in and pick up where we left off...so im guesstimating a 2 month process as CP stated 3-4 weeks for one damn piston. Im disappointed the engine blew but i rather it do it at the shop then in my car....that would of sucked and the damage would of probably been worse on the good side im happy with the numbers and hope to squeeze a few more ponies out once its all back on the dyno and has the final mapping.

Dan the valve springs are good to go they are actually a spring Ferrea did up for suzuki moto gp...they fit the 20v perfectly just required a seat and new retainer....thats a 15000 rpm engine so it definitely not an issue there.

[oldeskewltoy]

Can see that the valves were hitting all the pistons... impressed with how long they held up in that environment. Good luck, and it seems like you/they found the cause.

[gaijin_rokurunner]

decided to bump c/r up to 14.1 since the engine is apart and invested in a Hy-tech header....the bill keeps getting bigger is there no end to spending money on these damn cars and engines !....

[RuizXIII]

You are the only guy who is optimistic about his engine blowing up! Haha
It sucks that it blew up but seems like you are going to make it even cooler next go 'round!
I can only imagine...

[eightsixgts]

You are the only guy who is optimistic about his engine blowing up! Haha
It sucks that it blew up but seems like you are going to make it even cooler next go 'round!
I can only imagine...

I would be if I didn't have to pay for the repairs, too.

[gaijin_rokurunner]

Yeah dont have to pay for anything since it was their error ...i did buy a hytech header so i ended up spending money anyways lol

[Orange Rocket]

Good Luck!

[gaijin_rokurunner]

Thanks Orange Rocket...what are u building now i see u sell alot of parts but also buy alot?

[8-Eight_Six-6]

Maaaan that's such a bummer dude. Good luck with the rebuild.