1BADGS-R

I need some help guys, for some reason i melted my # 1 pistons on my turbo charged B18C1, it is fully built, the bottom end consist of Wiseco pistons, Eagle Rods, and Darton sleeves. My fuel system consist of a 255 lpg in-tank, a 6:1 Vortech FMU, a B&M fuel pressure regulartor (set at 38 psi at idle), and a set of RC 440cc injectors. For tunning i have a A'pexi S-AFC II. My turbo is a Turbonetics T3/T4 60-1 with a .63 back (if it matters). My correction factor was set at -35 all the way across until i could get it to a dyno, i know that is not correct if i was revving it, but i figured i could at least break the motor in on that with out revving the motor, i only put 531 miles on the motor. It never saw past 5000 rpm. Im in the process of building the motor back together, my opinion is that i did'nt have the S-FAC set correctly. But i would like to hear from some of you guys that have some experience on this situation. Some of my questions are why did it just melt the #1 piston. And what should my correction factor be set at with a set of 440cc injectors. Also what spark plugs are you guys running, i know i need a colder set of plugs, but what exactly are you guys running with.

thanks
David

1BADGS-R

any help?

RyanEJ8

You shouldn't be boosting without it tuned properly. Next time drive it like a grandma, don't go above 2500-3000rpm, until it's tuned properly.

tgreaves

You have all that and your using a fmu

99B16Si

i had the same problem about 3 weeks ago. same exact **** happened but it happened as it was getting tuned on the dyno. i drove around on a friends hondata program for about 1k miles,which ran lean as hell, until my aem ems came in a month later. i narrowed it down to a few contributing factors. (oh and it blew with the aem in there not hondata)

1. i was running lean as hell on his program(never got on it all the way and was only on 8psi) but im sure that took its toll.
2. i didnt sand down the sharpe edges on the pistons, thus creating potential hot spots.
3. i had no idea where the timing was, coulda been super advanced in the hondata even tho the distributor read 16deg
4. 20psi and pump gas inst always recommend but i have a feeling bad gas could have played a factor also
5. i should have been using 8 series plugs instead of 7's at that much boost
6. im also coming to realize that since i put the motor back together exactly the way it was its not making good power at higher boost levels, i think i have a boost leak somwhere and i know i have a crack in my manifold.

car made 275whp/205wtq @8psi and only 320/255 at 15psi because it wont hold power up top like it does on 8psi. i think the turbo is working to hard to keep the psi up and is just blowing in hot air. and the dyno graph looks like ****. full boost and vtec at 5300 then it goes down then max torque at like 6300 then it falls off again. the 8psi graph looks a lot smoother. and lastly the car doesn make anymore power past 15deg of total timing at only 15psi

hope that helps


Modified by 99B16Si at 4:31 PM 3/31/2004

tgreaves

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 99B16Si &raquo;</TD></TR><TR><TD CLASS="quote">
1. i was running lean as hell on his program(never got on it all the way and was only on 8psi) but im sure that took its toll.
3. i had no idea where the timing was, coulda been super advanced in the hondata even tho the distributor read 16deg
4. 20psi and pump gas inst always recommend but i have a feeling bad gas could have played a factor also
</TD></TR></TABLE>

Think you found your problem..

TravSi

why did u run an fmu and the afc hack? U use one or the other....prolly part of yur reason somethin went wrong....It amazes me you put that much into a motor and setup and then kill it cause u got crapy with the fuel and timing mgt.....Go with Hondata, Uberdata, AEM, or just use the hack but have a timing program written to pull timing in boost....Thats what I run but saving up for obd1 conversion and aem

m R g S r

Nevermind, I didn't see that you had 440cc injectors.

1BADGS-R

yea i have a chip being burned as we speak, that is gonna bring my full load timing back down to around 26 deg, and when i was driving my car i was not boosting it. BTW my distributer timeing was set at 12 deg. my fuel was set at -35 all the way across on the S-FAC, and fuel pressure was at 38 psi. My spark plugs looked like they were burning fine at the time.

VTC_CiViC

26* of timing with how much boost??

boosted_dc2

break in your motor on your stock ecu and injectors. its worth the wait, just dont boost. you will not have this problem agian. and if your running a built motor why run the hack??? spend the extra 400 bucks and do it right IMO.

Landon

RyanEJ8

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tgreaves &raquo;</TD></TR><TR><TD CLASS="quote">

Think you found your problem..</TD></TR></TABLE>

I agree with you picking out #1 and #3, but not really #4. If he had been tuned right, running 20psi on pump gas would be very possible, especially with the 93 octane we have here in Florida.

zm_dawg

sorry to hear bout this....i plan on putting in my swap and running that for approx 1k....then sending it off to earl to be built...run that for awhile...and then finally assemble my turbo...just so I know where and when things may go wrong.....

tgreaves

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RyanCivic2000 &raquo;</TD></TR><TR><TD CLASS="quote">

I agree with you picking out #1 and #3, but not really #4. If he had been tuned right, running 20psi on pump gas would be very possible, especially with the 93 octane we have here in Florida.</TD></TR></TABLE>

I actually meant bringing all 3 of them together.. Properly tuned and everything, 20 psi on pump gas is acceptable..