fastcrxsi90

heres some pics now that im done...just waiting for some good weather so i can put the car on the road and see how it performs.

*D16A6 head - ported about 0.020" larger than intake manifold and ported smaller than header(cant remember specs right now), valves were also cleaned up and inspected, milled ~0.010".
*D16Y8 head gasket - CR is about 9.5:1 with mill.
*98 D16Y8 intake manifold - ported to match TB and clean core shift.
*90 B18A 58mm TB
*Airmass header - ported slightly to make each port similar size.
*Delta 260 profile cam - 260 dur/400lift both int.&exh.
*JG cam gear - advanced 2 degrees






here is how i mounted the IAT sensor...yes its ghetto but i didn't want to hack my intake. and it works!

this is my head after being milled.

im just putting this up for reference, so if you have any questions let me know. also...how does it look? good or bad?



[Modified by fastcrxsi90, 9:10 PM 4/1/2003]

1.8Tities

Lookin good bro! It put my engine into shame, very clean indeed.

DJ_SaNdOz

give us a folow up once it's broken in & what not- I want to know how the cam feels. I am waiting on parts to do my a6 rebuild- i am adding a1 pistons in teh mix though.

4drEF

Doooooode... somebody stole your battery, y0!!!

Nice looking set-up! That should run very smooth!
Where did you get the head work done?

madman13lm

wow, almost makes me want to pull my B16A and swap in a mad D series. Thats some awesome paint in the engine bay.

kyle h.

lookin ill fresh!

gotta love the single cams. not enough props for keeping the a6...rock on

IamVtec

so fresh and so clean

upstatecrx

what did you do for the fuel supply line from the fuel filter to the fuel rail. i am in the process of finishing my Y8 intake manifold swap. do i need to buy the y8 fuel supply line?

90da

Do you have a complete write up on what you need to install the Y8 manifold? Sounds interesting....maybe I'll give it a shot.

fastcrxsi90

i just used the origional a6 line...you have to use the nut from the y8 rail because the one from the a6 (with the fancy plastic on the end) is the wrong size. ive got an extra from a 92 d15b7 that uses the same style fuel rail...that would have worked too but the ends were so corroded and ugly.

yeah...the battery goes in when the snow stops falling
i wanted to move the battery or get a real small one, but i dont feel like dickin around with a battery box if i take it to the track. also my intake is smaller than my TB so ill have to do something about that.

i did all the headwork myself except for the mill of course. i just shaped and sized the ports to what i needed and put the right finish on them. i didnt want to go too wild since its supposed to be a mean street combination.

not yet, but i will post a complete parts list soon.

fastcrxsi90

parts list: EDITED:

1.) 96-00 d16y8 intake manifold (from manual tranny)
-----99-00 has some air injection crap that needs to be blocked (or so ive heard)
1a.) 96-00 d16y8 fuel rail
1b.) d16a6 obd0 injectors
1c.) fuel line:
-----origional d16a6 line works
------d15b7 line would work
------d15b2 would work
-------im assuming the y8 line would work
2.) 90-91 b18a throttle body 58mm
------has same setup as d16a6 TB - charcoal canister, map on firewall - has extra hole for teg fast idle solenoid that can be plugged(not needed)
3.) 87 d15a3 (Si) throttle cable bracket
------needs to be installed upsidedown and bent slightly
------or y8 bracket upside down.
4.) 88-91 d16a6 throttle body 'disk' - whatever the hell the thing that the throttle cable pulls on is called. make sure you put both springs on the same as they came off...that dashpot will screw with your idle and make it jump up and down.
5.) IAT sensor needs to be moved - no provision in y8 manifold
-----the wires will also need to be lengthened
6.) EACV - if yours didnt come with the y8 one then -
---97 f22b? accord eacv is perfect replacement
---87 accord fuel injected model (engine code???) works if mounted backwards...its mounted on the front of the accord manifold so if you flip it over and dont want to run coolant this is good cause there are lots in junkyard. wires will need to be lengthened slightly (its fits tighter against the firewall...but the wires will clip on.)
7.) y8 intake manifold gasket
8.) b18a TB gasket
9.) might as well portmatch the TB to the intake while its out, and get rid of the nasty core shift as well.
10.) unplug that fast idle thermo solenoid - dont need it and wont throw a code.
11.) pcv valve slides up middle of manifold. i put it there cause its easy to get to.
12.) make sure idle ajustment screw will turn while the TB is out....i had to turn it all the way in.

i think thats it if i remember anything else ill edit it.


[Modified by fastcrxsi90, 5:18 PM 4/2/2003]

Lord Quaalard

Sweet, mAd ProPS on the clean engine bay. I'm fixing to do a similar setup as dj_sandoz a little at a time. A 12.5 CR cammed and ported d16a6 with IHE of course. I believe that the runner length on my a6 is "fighting" my cam in it's current state and the shorter runners on the y8 intake will help. I do have a couple of questions though. I've been searching a few sites and I can't get a straight answer. I have found a mani for $100 (is this a good price?) and I need to know so that I can go get it.

What parts from the EX do I need for the swap?
Do I need the fuel rail, lines...?

Thanks in advance for any help.

Dru

Urban Business

advancing your cam do anythign besides move your power curve?

fastcrxsi90

i paid 130 shiped for mine...included manifold,TB, fuel rail, but i dint know it was missing the eacv till i got it. so yeah...i guess its a good price.

see 1a, 1b, 1c...i forgot and had to edit.

i advanced it because the mill and thinner head gasket retards the cam timing.
i think that the general rule of thumb is for every 0.012" milled the cam timing gets retarded 1 degree.

Lord Quaalard

If you go too far advanced you get peak pressure too early and you destroy rings...trust me.

DJ_SaNdOz

the one thing about the a6 buildup that I haven't gotten answered yet pertains to the high cr that would result from the a1 pistons & the y8 headgasket-since the cr will be 11.25+ will 93 octane be safe or will i need to roll around w/ a box of octane booster? i'm fine w/ it if that's what is needed; just curious of other peoples experiences.........sorry to threadjack

DavidG

What gains does just the manifold swap give or mani and teg TB give? Is there a larger TB than can be put on the stock a6 manifold?

Thanks

Urban Business

ahh yes, missed the "i milled my head" part

Lord Quaalard

You should be fine on 93 for the meantime. You could boost the octane for a while before you get tuned right if you wanted to be on the safe side. An easier way to do this would be from the local paint store (PPG, etc...). Go get some toluene to boost the octane. It's already in the gas you use now and I believe it's 110 octane in current form (someone correct me if I'm wrong). Also a step colder plugs would help.

cyberx

does any one have pic by pic setup of every step to do the y8 manifold swap?? also did you get a adjustable fuel pressure regulator?


[Modified by cyberx, 1:55 PM 4/3/2003]

silverpenny

wow, that looks really good.

sporkcrx

good god that's beautiful. When I put in my other a6, i'll have to clean her up good then snap some pics too.

Lord Quaalard

It makes me embarrased of my engine bay. Back on topic, I pick up my y8 mani at 6:00. I'll put it on after I mow the lawn on Sat. (I am domesticated). I'll post back impressions on Monday.

fastcrxsi90

yeah let us know...since i havent had the joy of driving mine yet...its supposed to snow again this weekend...damn it

heres some **** about toluene
toluene

it depends alot on what cam your using and the cam timing...dynamic compression. since the a1 pistons probably arent a perfect fit to the a6 head (not that the a6 ones are) quench wise - its hard to say. run gumout regane once in a while....or your favorite carbon cleaner. after all that...i dont think i helped at all, sorry

Lord Quaalard

I'll try to remember to take lots of pics of the install. If I have time I'll post a detailed in a separate thread for future questions. I'll put keywords in the title for easy searches.