10.3:1 y8 with 14b turbo, advice
 

Ok so I just purchused Fooks 14b turbo, manifold and downpipe. I'm also in the process of buying all the charges pipes, BOV and a JRC "6 FMIC. and some tuner toys 450 injectors.

first question what's the easiest way to go about lowering the boost on a 14b turbo I know there set at 9psi but I'd like to be able to tune it down to 5-6psi for street driving and run 9-10psi only when I'm at the track. I also stupidly built my car more for N/A then boost with it's 10.3:1 compression on OEM pistons and rods. So I know I need a really good quality tune to prevent detonation, I'm really kicking my self for throowing this motor together the way I did but it was a low budget project last summer. But now I crave boost, what do you think the best way to go about making sure my car can handle the up to 10psi, I already got a Uberdata ecu just needs to be tuned and will have the bigger injectors, I know detanation is my biggest enemy right now, so any advice would be greatly appreciated.
Here is my current set up

D16y8
Jg85vt35 Cam
Mild P&P
B18 Throttle Body
custom 2.5" exhaust
2.5"Test Pipe
2.5" resonator
Mugen STYLE Twin Loop Muffler
Shotpeened y8 rods
Knifedged y8 Crank
d16a6 Pistons
z6 tranny
Centerforce Clutch
B&M FPR
Clutchmasters Flywheel
Z6 Tranny
P28 Uberdata ECU with boomsland obd2a to obd1 harness
I will also be running tuner toys 450cc Injectors

Thanks

Re: 10.3:1 y8 with 14b turbo, advice
 

Just run stock wastegate setting. Tune it a bit conservitive, and just be done with it. It'll hold up just fine.

Re: 10.3:1 y8 with 14b turbo, advice
 

the compression wont be a big problem, look at all the rich kids boosting their stock type aarrggg's.


i would get rid of that twin loop mooogen muffler though. put a straight pipe in its place

Re: 10.3:1 y8 with 14b turbo, advice
 

Yeah, I'm kinda like you. I'm interested in a 14b but don't want to be running 8-10 psi daily, especially until I get it tuned. I would like 6 or 7 psi. I was thinking of eliminating the wastegate actuator, and getting an external wastegate.

Re: 10.3:1 y8 with 14b turbo, advice
 

I would try out 10psi with that combo. Hopefully you can find someone in your area who you can trust to have good judgment w/ a street tune.

Considering that your not running an open WG and your exhaust seems to be pretty quiet, it should be relatively easy to hear it ping. Even at WOT.
So dont take that twin loop off just yet ;) (Although, Id personaly rock a ------- cherry bomb)

Heres how I would start off with the Ign map.
http://img96.imageshack.us/img96/380...eign6cs.th.jpg


This is just a starter map, and may require some changes. The important part is in the idle area; notice how the idle portion is enlarged so there will be no room for error when setting your timing. Also notice that the last two columns are the same. This is just a habit of mine, as the MAP sensor and Uber will never really peg out on the last column. This way you know for sure what your timing is when/if you max out the MAP sensor. If anything, this smaller turbo may ping a bit in the lower revs since it will build boost so fast. |I would just brake/TQ the car and build boost at progressively higher RPMS (2k, 3k, 3.5k, etc...) and keep an ear out for any ping. If it does, adjust the ign map at the appropriate area.
Good luck.
Dave

Re: 10.3:1 y8 with 14b turbo, advice
 

I have a really good tuner he's one of the best if not the rest in Denver.. So if I grap the 450cc injectors, use that uberdata map your showing me to start out with, until I can get it over to have tuned proffesionally. I had a few people telling me my engine at 9psi might not even make it thru the tune. And it kinda freaked me out, I'm kinda considering putting it off a few weeks and just replacing the rods and pistons and installing some arp headstuds. It's something i planed on doing later on but I'd like to wait 6-12months to do it and I'd like to do it with a spare engine while my car is still driving so I only have a day or 2 of downtime while i swap out the engine.

I mean i guess your right thou people turbo Bseries motors all the time and I know the b16a and especially the type r have much higher compession. I think with a good tune and proper fuel delivery i can last a year at 9-10psi

thanks for the input guys keep it comin if ya got it

Re: 10.3:1 y8 with 14b turbo, advice
 

and yeah my car is really quite and won't it get even quiter when I put the exhaust on right now I hear more engine noise from the AEM CAI and 4-2-1 header then anything else. I like my ---- really quite even if it sacrifices a few hp here and there. Plus I have my muffler on clamps so it's easy to take off when I go to the track ;D

Re: 10.3:1 y8 with 14b turbo, advice
 

yeah right, open dumptube.

tune it rich, take it easy on the timing, you'll be fine.

Re: 10.3:1 y8 with 14b turbo, advice
 

ha, missed that small detail.

Re: 10.3:1 y8 with 14b turbo, advice
 

Invest in a wideband, you can compensate for higher compression with more fuel, and more/less timing depending.

Re: 10.3:1 y8 with 14b turbo, advice
 

its fine, my friend boosted a dual cam zc with like 10-7-1cp and with a rhb5 at 14psi, with the afc hack, lol, he fried his ringlands, but if he would have spent some money to tune it, it would be fine...

Re: 10.3:1 y8 with 14b turbo, advice
 

i'll eventually be buying a wideband but for now I'll just be uploading a good base map so I can drive it to my tuner and have him tune everything, cam gear FPR uberdata all that ----, so it all runs right. So you guys dont' think there will be any problem driving 9psi daily, what do you think would be safe track psi on 101octane gas??? (I know I'm getting power hungry and I don't even have it on yet, lol) Also a friend of mine wants to sell me is NX N-ntercoler chiller kit for $150 should I get this and run it using CO2 or would that be over kill???

And thanks for all the help guys Your making me feel good about this project I think I'll sleep alright tonight. Thanks

Re: 10.3:1 y8 with 14b turbo, advice
 

idk about the n-tercooler or w/e, might be ok, but worry about the kit first, id run 8-10 on pump gas, its fine, i ran 92 octane with a ls turbo at 11psi with a super 60 t3. just make sure its tuned good and what not, dont boost high with just a basmap, get it tuned asap, or u will have a good chance at a fucked motor. just get it tuned, run 8 daily and 10 at track, pump gas will be fine, but race gas is always better >:D

Re: 10.3:1 y8 with 14b turbo, advice
 

IMO those maps Leed posted have way too much timing for that setup. I have a lot of experience with my own y8 setup i had and they can't take timing like z6's can because of the combustion chamber design the y8 has. On my setup with a small wrx turbo on 8-10psi it would slightly ping with maps very similar to what leed posted. Eventually i plugged in the actual p2p y8 timing maps(which run way less timing for a reason) and i ran about 12.5* total timing at 10psi with no pinging. Even if i had the timing turned down as low as 15 or 16* it would still ping. This is with an afr of 11.5:1 in boost. For your setup you will probably need even less timing. I would take this to the dyno for ignition tuning and keep an eye on your plugs!

Re: 10.3:1 y8 with 14b turbo, advice
 

Yeah it will be going to the dyno a few days after install, but I still need to get a basemap that will get the car there. This place is 50miles away and I don't have that kind of flow for a tow.

Re: 10.3:1 y8 with 14b turbo, advice
 

for your basemap download bigwig's p2p import script for uberdata and import the p2p timing maps in. Use that as a start and not the p28 timing maps.

Re: 10.3:1 y8 with 14b turbo, advice
 

So I should just use a stock p2p map i mean I could just run my p2p ecu till I get to the tuner. Or is this a p2p map that is more for boost and 450s

Re: 10.3:1 y8 with 14b turbo, advice
 

Also my goal on this project is 220whp which I don't think I'll be at but do you think I'll be over 200

Re: 10.3:1 y8 with 14b turbo, advice
 

you need to import the p2p map into uberdata. http://uberdata.pgmfi.org/forum/inde...;threadid=3407

Re: 10.3:1 y8 with 14b turbo, advice
 

Which is completely different from a D-series - those guys are using boost to pick up where their torque curve normally drops off so they make mutant high rpm hp. They don't build lots of mean cylinder pressure to create power, they just rev to the moon and let the extra rotations take care of the problem. D-series have lower torque, aren't as efficient in the higher rpms, and that makes them a completely different story.

Re: 10.3:1 y8 with 14b turbo, advice
 

So our you saying there is going to be a problem with my compression with this turbo set up...

Also what would be a resonable amount of power I should expect from this setup at 9psi. I'm really aiming for the 220whp mark

Re: 10.3:1 y8 with 14b turbo, advice
 

he's not saying there will be a problem, he's just making sure you knew that guys statement didn't have alot to back it up, like logic.

9psi on my z6 feels like about an even 200-210whp or so on the butt dyno. and i have a mildly damaged piston in cylinder 3.

Re: 10.3:1 y8 with 14b turbo, advice
 

Fook how long did you run this setup on your car? I'm going to be starting another motor build this winter probably around october, then turning the boost up to 16psi and running a direct 75shot from Nitrous Express >:D


Eventually looking for 300whp right now 220 is my goal

Re: 10.3:1 y8 with 14b turbo, advice
 

No, I don't think 10.3:1 CR is going to be a problem, I just didn't want you confusing B-series VTEC with D-series. The amount of cylinder filling, and the amount of load, taking place in the midrange of a D-series is quite different and will need a richer AFR for safety than the "12:1" "ideal" AFR for the B-series stuff pushing your power levels.

With the 14B, 200 whp is no problem. 220whp should be safe if you have a good sized IC but you're getting close to running out of turbo. Plenty of HT kids have hit 300-330 whp, but you'll need a bigger turbo and a less restrictive turbine (.50 trim T3/T04 with .63 AR stage 3 turbine is popular) and headstuds and misc small stuff. You can keep the more restrictive turbine with water injection, which does a lot more for taking heat out of the engine than an IC, and enjoy the quicker spool, but some people don't like the complexity and always having to fill the water injection reservior.

Re: 10.3:1 y8 with 14b turbo, advice
 

Well I'm not down for the water sprayer, but my buddy has a Nx Nterchiller kit that he is willing to sell me for $100, i was thinking of just running co2 since it's much cheaper the nitrous oxide, do you think this would be over doing it

Re: 10.3:1 y8 with 14b turbo, advice
 

I didn't say water sprayer, I said water injection.

Spraying anything on your IC is a faggot half measure that renders minimal gains. Pick something juicy and spray it into your engine - ah!