Opps... Posted on my freinds name https://www.nopistons.com/forums/pub...1047683664.gif

hey guys...Just Dynoed my car, got these results... 367rwhp @12 psi at 7,300rpm... Problem im having is that the car keeps breaking up from 7-8k. Either a ignition problem, maybe bad ground? Please help me out.



Mods:

Haltech e6k

T04S 60-1

1,600cc , 550cc

Full 3" exhaust

Stock Ignition system



http://kahren.net/cars/3/better.jpg

What are your ports? Why do you want power past redline?

well i bought this car with the current setup from brian ( 1fast7)... he was making 405rwhp @15psi at 7,800rpm....Why im trying to go to 7,800 myself.... He had decent sized street port, P port... I ended up popping the motor a little after i bought it from him... When we bult this motor, we went a good 10-15% bigger on all ports from the current motor....



Port pics...



http://kahren.net/cars/!Pics!/PROJ...9;s%20t2/ports/

What redline https://www.nopistons.com/forums/pub...#>/biggrin.png



I doubt its a grounding issue, ohm out your coils

i'm still blaming the ignition, charge time, wires etc

You gotta stabilize that boost. I make more torque at 10psi with stock ports with a flat torque curve.



Do you see how your torque curve just keeps rising?



I would throw in a pair of stock wires and fresh plug and retest after you get that boost straigthen out.



C

the tq keep srisign cause boost keeps rising also, the boost contorller is turned off. this is the LEAST boost hea can get, the wastegate is too small so it keeps creeping slowly. we will worry about the flat power band after the breakup is fixed

What kinda spark plugs are you using?

Why do you want to rev that high? Are you running all the high RPM necessities (i.e. higher OPR, deeper bearings, etc.)???





-Ted

NGK 9's all around

RB OPR

RB harden stationary gears



Theres no real reason why i want to go to 8k i guess. But the previous motor made 405rwhp @7,800rpm. So why not go to 8k? On the my dyno the HP dosent fall off, so why not go another 1k to make more hp



My main goal is 450rwhp @15psi. If brians dyno was right with the 405rwhp @15psi , then i m hoping i shouldnt have much of a problem getting 450 with all ports being 15% bigger. Of course with good tunning

My MSDs have spoiled me, but a quick check for secondary ignition breakdown, is to gap the plugs down to .010" and stick them back in.



If it cures the problem, the ignition system is suspect. The system may be at the limit of performance for that much boost and RPM, or a component may be loosing good contact. Could be as easy as a dying plug.



A single plug can look fine but be leaking voltage across a dirty ceramic.



This where an MSD ruins your trouble shooting skills. It will fire the plug anyway.

Dirty or not. oil covered or not. too much gap or not.



I run all 4 plugs at .010" all the time, and have no breakup problems up to 9,600 RPM.



Lynn E. Hanover



Picture is a fatigue failure of the forward attach point for the top link from the differential (Speedway Engineering quick change). It should have been a double shear joint. It is a single shear joint, and applies a torsional load to the tube. Even so, it did last for 5 years.

I think the spark plugs are too hot, or run a CDI as Lynn has mentioned.





There's no reason to be revving that high just for bragging rights.

You're getting awefully close to the 8,500RPM resonance that can KILL motors.

Bearings shift, tension bolts come loose, and things break...

"RB OPR" can either mean the "street" version or the "race" version - you really need the race version that is over 100psi, deeper bearings, damped tension bolts, etc.





-Ted

Im not doing it for bragging rights at all ted. I previous motor made peak hp at 7800, so i didnt think there was anything wrong with it... everyone spoke so highly of brian ( atleast on Evil forum ) i figured if he had the motor reving that high then it was fine...

Brian?

Which Brian?





-Ted

And to add to your delima.....If your ports are a 15% increase from what the "Brian" had you should have no reason to want to rev to 7800rpm to make the same or more than the 405hp the"Brian" made. If all things equal you should easily be making the same or more with less stress on the motor. https://www.nopistons.com/forums/pub...DIR#>/ohmy.png



So remedy your ign problem first, before going # hunting. https://www.nopistons.com/forums/pub..._DIR#>/dry.png

Ted- Brian Schuering... not sure if last names spelled right... Hes a real cool guy. Sorry brian for bringing you into this thread, it was not intentional, i was just merly trying to explain myself and why i was so set on going to 7,800rpm... And your motor was the main reason:)



Boost Creep... I never had any intentions of boosting more till i get this problem fixed... I know for a fact ill get more HP then brians motor at same Psi, thats obvious, but my Goal is to get 450 at the same psi he got the 405 https://www.nopistons.com/forums/pub...DIR#>/wink.png



When i went to the dyno the plugs were new / are new. I have 8.5mm magnacore Wires. Obviously stock coils. So do i go with MSD coils?



Also im going to be at the RotorFest on Sunday, are they offering any tunning there??



Sandor

Sorry for asking...there's too many "Brian"'s out there! https://www.nopistons.com/forums/pub...IR#>/blush.png





-Ted