Help with choosing turbo for my built a20a3 motor. :)
 

hi guys, im finishing up my motor, and im at the point where i need to start getting the rest of my turbo parts together.

heres the setup:
1986 honda accord hatchback...
A20A3 SOHC 12V 2.0L Motor

Head stuff:
70 > 68mm bigass throttle body
AEBS B16 manifold, opened up to 68mm to match TB.
manifold port matched to head
ported and polished head
3 angle valve grind
forged valves
8500 rpm dual wound valve springs
ti retainers
delta 282 reground cam
arp studs

Block Stuff:
Eagle H-Beam Rods from LS Integra (fits the a20 ;-) )
Diamond Racing 8.5:1 CR pistons
Chrome steel (or whatever) rings
Bored .050
Lightened 16.5 lbs flywheel
Spec Stage 3 6puck clutch (260 ft lbs)
King Tri Metal Bearings
Toga High Volume Oil Pump

Totally balanced bottom end
Oil pan baffled up to keep the sucker lubed up at 8000rpm

Misc Stuff:
I am attempting an OBD1 Swap on this car, im working on getting the f22 accord dizzy onto my head, and once i pull that off, i am going to be running a p75 ecu and using crome pro to tune it.
All i have for fuel so far is AEM FPR lol but im just starting to gather fuel components

Stuff I need:
Adjustable cam gear
DSM 450cc blue top injectors
Walbro Fuel pump (255lph)
.050 headgasket (Any ideas???)
turbo manifold (ramhorn or semi elr)
downpipe
3" exhaust
etc

Turbo Stuff I have:
garret t3/t4 57 trim, .63AR Turbine, .60AR Compressor brand new...
HKS SSQV BOV
Tial 38
Oil lines :)

anyway, this is a 2.0 block, with closed deck, and im building everything to be able to hold 20psi. this car will be practially daily driven, and street driven most of its life, but it will spend a lot of time at the dragstrip as well...

i figure i will be close to 2.1L with the bigger bore, but im not sure on the math to figure that out for sure...

anyway, i would like some advice for what turbos would be good to use. keep in mind this is a 2.0 (2.1?) sohc, withonly 12 valves, the exhaust valves are the bottleneck in the head. :( the motor is built to handle 8000 rpm, and with my cam and tb and intake manifold, i think its more of a topend car than anything else.

do you think the t3/t4 turbo i have is too big? what are your opinions about that? also, what sort of ball bearing turbos are a good match, i was thinking about possibly running a potato, they seem to be perfectly matched to a 2.0 SR20, which revs to 8000, but does flow better than my a20...

any feedback would be appreciated....

Re: Help with choosing turbo for my built a20a3 motor. :)
 

sounds interesting, hope it comes together.

Re: Help with choosing turbo for my built a20a3 motor. :)
 

thanks... just trying to figure out if the turbo would be oversized for my application....

btw can u make a20 turbo manifolds? if so, how much for each type? im leaning towards semi elr, but ram horn would look pretty slick (not sure of the clearance problems, and performance benifits of ram horn over a semi elr)

heres a link to the turbo i have...
http://store.yahoo.com/cheapturbo/gat357trw63a.html

COMPRESSOR SPECS:
flow: 53 lbs/min 678cfm
.60 A/R HOUSING
60 TRIM WHEEL

TURBINE SPECS:
.63 A/R HOUSING
STAGE 3 WHEEL

oil lubricated centersection.
supportable of 500whp!

its a 4 bolt discharge with no internal gate (obviously)

Re: Help with choosing turbo for my built a20a3 motor. :)
 

I wouldnt even hesitate on putting that turbo on your setup.

Re: Help with choosing turbo for my built a20a3 motor. :)
 

hmm, yeah from the ---- i have read, b16 guys seem to be using similar turbos...

i bought it originally for a ka24e nissan motor, and was cautioned that it would be a bit large for that motor, so i guess thats where i got nervous about using it.

but like you say jeff, turbo lag is just another form of traction control!

Re: Help with choosing turbo for my built a20a3 motor. :)
 

exactly.. I've seen guys including myself run larger turbos than that on 1.6l's and it worked out damn good. I prefer a turbo to have a lobsided powerband, I cant stand small turbos where your constantly making boost and spinning tires like crazy. The disco potato is a prime example.. great turbo, just spools way to freaking fast. With your displacement and all the ---- you have done to that thing, that turbo should work pretty good.