Discussion: blacktop 20v: the road beyond 200HP

[86er]

continued

Here is a nice link from Garage annex site where the build th 20v N2 car's egine and dyno it at various stages and with various cams(personally i still find these figures a bit short)

translated
http://64.233.179.104/translate_c?hl=en&...uage_tools
japanese original
http://www7.airnet.ne.jp/annex/engin_seisakuki.htm
in the end the get about 213ps with tODA　288?9mm lift IN and 304?9mm lift EX cams and built engine

this is still invaluable info

now I perosnally think at this level of tune figures should exel well over 200hp in te 220-230crank hp range so i cant help but think something is wrong look at this

http://64.233.179.104/translate_c?hl=en&...en%26lr%3D

Satoru Works drift ae86 20v 1600 produced 244PS thats sould more like it not sure figures of the 1800variant or the specs but if anyone has them please share i suspect they arent much different from most built 20vs in japan but maybe difference is in compression and cam lift.

I say lift becuz all the 200+ 4ag16s i see seem to run very high lift
Here
http://www.jtuned.com/content/templates/...6&zoneid=1
the FA 16v by Hasselgren while cams are only 272 lift is 10+ and 11mm
Also I have a 86Super Tuning magazine here from japan where they cover the tec arts 16v which is 230ps also has very high lift cams in that same range, and 110mm velocity stacks on ae101 ITBS, doesnt say the compression ratio but all the tecarts cars have 230ps their drift car and n2 car and and all the cars with that spec engine have it. the show the build up of the motor in detail the magazine i will try to get some pics up.
Anywwway im suspectin that the lift has something to do with it, the only real choice in japan fr 20v cams is toda all there 20v cams are limited to 9mm lift, kelford makes some 20v cams and there highes race cam has like 10+mm lift http://www.camshaftshop.com/camshafts/vi...-camshaft/ and a nice powerband while still under 300degrees duration
also Cat Cams makes some aswell in europe somewhere lol
with 11mm lift 291 duration http://www.aeu86.org/viewtopic.php?t=405...72b4a6c496
waiting to see final results for this motor

hell there was even a guy on club4ag the otherday with some mild 264cams and basic bolt ons in blacktop he was gettin like 160whp which is in 190+crank region still way more that the japs these were toda cams. So I call BS on the japanese 20vs except that satoru works guy. CAN anyone please post his specs if u have them. Thanks

Now For all you club4ag people who are here now lol MR.John from club4ag who drifts blue rolla recently posted that hasselgren has built a silvertop(yeh i know what i said but like i said at this level they are even as heads wuld both be ported out etc) for Taka Aono 2007 drift car. I consider him a reliable source and Im waiting too see the mtor in this comin year and more specs. ANY WAY ITS SUPPOSE TO BE 306HP at crank. I am personnally confident about this but time will tell.

LAtsly the new valvetrain from Barry (dot Racing) no info on improvements yet but about time oversize vales were on market.

now all this is well and good but whats the secret and the truh behind a heavily modded 20v an whats the recipe to push a reliable one pass the 200mark? thanks what i want to discuss.


Now i know with Na especially parts have to work together and produce power togther otherwise u will not make full power potential so please feel free to share opinions on any thing u think i list that would not add to setup and goal of 220-240hp+ at crank

Im thinking a blacktop base
kelford race cames 298duration 10+mm lift
12:1 compression(would prefer 13:1 but how reliable i know this is is controversal issue few venture so high)
dot racing oversize valves and spings and retainers
ported head
valve angle job
100mm-110mm velocity stacks to to open powerband
to keep down cost stock crank (unless a steel one is found at good deal)
forged rods or stock(people still got issues with stock BT rods)
high rise 4-1 header with 45mm primaries and 2.5" to exhaust
crank fire ignition
what size injectors??
balanced bottem end
Any theories on the intake flow anle as in having itbs angled up to same angle as intake or closer( not sure how much this helps as the formual Atlantic motor has a straight intake)
the very same electric water pump by craig davies to elimitate the water pulley and get some lighter pullies for others
The six speed AZ6 miata box the oldskweltoy is investigating as i too like 170bhp's 6spd 20v setup.
what am i forgettin?

ok and....... GO!!