Finally, my motor went.

[Blown_xa]

I must say, I pushed it for a long time... so this was bound to happen. I was simply driving home a few nights ago and did a full boost (30psi) pull, right at redline in 2nd gear I got valve float. I have had the rev limiter set at 7500 for about 5 months, but it was pure luck I made it that long on a stock head. I was barely able to make it home, the car barely ran.

Im hoping the bottom end is ok, and just some minor damage done to piston tops.

Garm, I noticed you carry upgraded valve springs, Ill be contacting you soon about those and a intake manifold. Also cam options, if there are any.

I was able to squeeze 60k miles out of this motor without any snags until now!

[fnkngrv]

The BC Valves come highly regarded. There is also the JUN Cam pair designed specifically for turbo applications.

[cali yaris]

You did great, made us all proud with your build. We can grind cams for half what JUN charges, I would never pay their prices.

[kou]

You had great numbers before and beat it up for a long time so I cant wait for your next build.

[Golddeenoh]

*Engine :P

but besides that, it is time to go crazy, you know grind some cams, up grade the valves, port and polish, all that stuff that makes more ponies :evil:

[Blown_xa]

Regrind cams sounds fine to me. Ill do those, springs, and possible port and polish. I am interested in the golden eagle manifold, what tb flange options are there?

[The Spectacle]

Do you have a link to your build thread? I don't want to ask a bunch of questions that you have already posted answers to.

Did you do a teardown already? Interested to see what the motor internals look like.

[ilikerice]

I don't see an actual full thread build. But if you look up his name and all the threads Blown xA started, you will find alot of the answers you seek.

http://yarisworld.com/forums/search.php?searchid=1580961

[Blown_xa]

I never made a build tread, Im weird lol

[cali yaris]

I am interested in the golden eagle manifold, what tb flange options are there?

Whatever you want, it comes 1ZZ/1NZ, but we've made 1NZ cable (xA/xB) and larger (70mm) flanges as well. All available.

[cali yaris]

Do I smell 10's on the horizon? :biggrin:

[Blown_xa]

that is the plan yep. I need another 50-70hp, that should get me there if not very close .

[Yoda]

Hey when you ran that 12.9 in your sig, what was your whp?

[1.5]

good news for this little guys!

[Blown_xa]

Hey when you ran that 12.9 in your sig, what was your whp?

286whp at that time, with oem steelies. The 11.9 was with slicks and 318whp. I am currently at 352whp but haven't run it yet ( not that I could now anyays:smile: )

[xnamerxx]

Have you popped the top see what failed yet?

[Blown_xa]

Have you popped the top see what failed yet?

Ill probably do so next month, have a bore scope at the shop too. Right now, my focus is elsewhere (downhill/streetluge racing).

[scioncrew]

I must say, I pushed it for a long time... so this was bound to happen. I was simply driving home a few nights ago and did a full boost (30psi) pull, right at redline in 2nd gear I got valve float. I have had the rev limiter set at 7500 for about 5 months, but it was pure luck I made it that long on a stock head. I was barely able to make it home, the car barely ran.

Im hoping the bottom end is ok, and just some minor damage done to piston tops.

Garm, I noticed you carry upgraded valve springs, Ill be contacting you soon about those and a intake manifold. Also cam options, if there are any.

I was able to squeeze 60k miles out of this motor without any snags until now!


I sad to hear about your motor but i think the motor has had a good life. good luck on your next build.

[Blown_xa]

I sad to hear about your motor but i think the motor has had a good life. good luck on your next build.

Thanks, yea the motor did have a good life. Im not too upset because I feel I got a lot out of it. Even though It has been a week, I do miss driving that car.

[Flipper_1938]

When are you going to tear into it to see what needs to be fixed?

[Blown_xa]

I have time finally, and plan to pull the head tomorrow here at home. Ill take a few pics

[Golddeenoh]

finally i was starting to think you forgot about us. :P

[fnkngrv]

very curious!

[Blown_xa]

finally i was starting to think you forgot about us. :P

my focus was in another place for a while, so my xA was on the backburner. I attended a world cup downhill race a couple weeks ago, and had a good spill during a practice run. Im back to normal now after a concussion, which took a while to shake. Unrelated, but here is the video... I was on the outside of another rider and ran out of road, sherrif found me unconsciousness face down in the water. http://youtu.be/Udk_TqRY4rc

[cali yaris]

:eek:

wow.

[Blown_xa]

Bent cylinder 3 intake valve. Cly 4 damage is from a detonated spark plug ( 6 months ago or so). I reported about that on here in another thread ( Ill bump it). The valve definately indented an impression on the piston, but It isnt structural damage. The damage in cylinder 4 from the spark plug ceramic floating around is rather bad. The wall is really scored, the piston top is knicked up and blasted.

My plan for now is to put another head on, with stiffer valve springs, and higher lift cams. I want to then find the structural limit of this motor (40psi?) . Instead of starting over with a fresh bottom end now and risk damaging it (because im greedy), Id rather not waste a whole new build on experimentation.

[cali yaris]

Yes!

[justjesus]

face down in the water! DAAAAMN

glad you made it out (and 3rd place! wow)

[Blown_xa]

replacement head, ready to go on this weekend. Supertech valve springs installed, head decked and cleaned.

[ilikerice]

sooo shiny

[JustDidIt]

Unrelated, but here is the video... I was on the outside of another rider and ran out of road, sherrif found me unconsciousness face down in the water. http://youtu.be/Udk_TqRY4rc

Holy...crud! Your lucky!! Glad everything appears ok...

[Blown_xa]

xA is together and running !

[Golddeenoh]

pictures/video or it didn't happen. :P

[Blown_xa]

I drove it around last night, the valve springs alone have made a noticable improvement in power above 6600rpm. With the oem springs the car was probably experiencing valve float robbing the power. The dyno will tell the story. I was going to do more work (cams, maybe valves), but I need my car squared away and dialed in for an event coming up. However, expect a good gain because this thing is going to be tuned for some crazy boost levels .

[Golddeenoh]

I drove it around last night, the valve springs alone have made a noticable improvement in power above 6600rpm. With the oem springs the car was probably experiencing valve float robbing the power. The dyno will tell the story. I was going to do more work (cams, maybe valves), but I need my car squared away and dialed in for an event coming up. However, expect a good gain because this thing is going to be tuned for some crazy boost levels .

you excite us too much!!

[fnkngrv]

I bet once next summer roles around you and I would have a bunch of fun!

[Blown_xa]

I bet once next summer roles around you and I would have a bunch of fun!

yea! Id like to try the land speed thing too, maybe go with Roland (Harley streetluge guy).

[fnkngrv]

yea! Id like to try the land speed thing too, maybe go with Roland (Harley streetluge guy).

If you do give me a hollar...they get pretty picky about the safety requirements and gear. A lot of folks come from other realms of racing thinking they can just use what they have, for example plating for rollcage assemblies, and get turned around.

[fnkngrv]

Anything ever move forward with this?

Sent from m-o-b-i-l-e

[bairjo]

I sad to hear about your motor but i think the motor has had a good life. good luck on your next build.

Is this thread about a Prius?...if not, it was an engine that failed...