who runs reprofile cams?
- Thread starter 350ep70gr
- Start date
finx
Member +
you should gain excellent results from the ct9 with stand alone ecu especially with the head work you have done. im going to be putting a standalone on my ct9 set up very shortly (i have been side tracked with another project for the time being) the stock ecu ignition map is rubbish, so with a good map tuned to suit the turbo characteristics and your wicked head and 1bar should see 200hp no worries i would have thought. what spec ct9 are you running? and with what manifold/exhaust and boost control?
anyway back on topic let us know how you get on with finding the issue when u have time
anyway back on topic let us know how you get on with finding the issue when u have time
350ep70gr
Member +
you should gain excellent results from the ct9 with stand alone ecu especially with the head work you have done. im going to be putting a standalone on my ct9 set up very shortly (i have been side tracked with another project for the time being) the stock ecu ignition map is rubbish, so with a good map tuned to suit the turbo characteristics and your wicked head and 1bar should see 200hp no worries i would have thought. what spec ct9 are you running? and with what manifold/exhaust and boost control?
anyway back on topic let us know how you get on with finding the issue when u have time
I am running my old and tired ct9a (ported on both sides) standart ported mani and manual boost control. It is just a brake in set up i am running.
I will be near the car at friday or so:drive:...for the noise issue and i will report back for sure!
Thanks!
Chris
sx_turbo
Lifer
my engine makes the same noise and has done for the past 3000 mile, only when cold, (you can hear it ever so slightly when hot) and hasnt got any worse, so i put it down to the piston clearances.
i have recently rebuit my cylinder head and reshimmed it, and all valve clearances are as tight as they can be,
the car drives fine, and i dont have any other unusual noises, and it doesnt burn any oil, it doesnt breath excessivley from the oil breathers, and it doesnt sound like little ends (has been known for little ends to go once or twice through faulty manufacture) if it was little ends it would get worse over time.
as long as the oil pressure is ok, and it's not burning lots of oil, all is good
i have recently rebuit my cylinder head and reshimmed it, and all valve clearances are as tight as they can be,
the car drives fine, and i dont have any other unusual noises, and it doesnt burn any oil, it doesnt breath excessivley from the oil breathers, and it doesnt sound like little ends (has been known for little ends to go once or twice through faulty manufacture) if it was little ends it would get worse over time.
as long as the oil pressure is ok, and it's not burning lots of oil, all is good
350ep70gr
Member +
my engine makes the same noise and has done for the past 3000 mile, only when cold, (you can hear it ever so slightly when hot) and hasnt got any worse, so i put it down to the piston clearances.
i have recently rebuit my cylinder head and reshimmed it, and all valve clearances are as tight as they can be,
the car drives fine, and i dont have any other unusual noises, and it doesnt burn any oil, it doesnt breath excessivley from the oil breathers, and it doesnt sound like little ends (has been known for little ends to go once or twice through faulty manufacture) if it was little ends it would get worse over time.
as long as the oil pressure is ok, and it's not burning lots of oil, all is good
I dont have an oil press gauge in the car right now unfortunately but the oil light goes off at the few first couple rotation of the starter and i have check i have oil delivery up the head. Dosent sound as wory as a little /big ends noise.It is a more sweet light noise. I also run a little bit less piston clearence than what ross suggest for turbo application. You can hear a bit of piston slap for few seconds tho ..(90 or so) but after this it is quite. My noise is the same as my 636 ninja with the timing chain. The thing is that maybe something from the out side is loose or something cause the noise seems to come arount the altenator and below the intake mani.
Let see on friday...!
Thanks for your input!
Chris
sx_turbo
Lifer
ross pistons are notorious for having stupidly large piston clearances, i have wossners that are meant to be almost silent, and my noise is exactly the same as yours.
keep us posted how you get on please dude, see if we come to the same conclusion
350ep70gr
Member +
350ep70gr
Member +
I built it myshelf mate. All 4 pistons are exactly the same when you mesure them just below the pin. I know what you mean tho (cause my ross in my first engine had a very very litle variable each other). I was present when the engineer rebore the bottom and it is the hot technic i used in this engine.(means honing at 88 celcious).Thats why we use the tightest suggested clearence.
Chris
sx_turbo
Lifer
my engineer did that, each piston was marked what went where, and were also re-balanced etc etc
HYBRID
Super Moderator <a href="http://www.toyotagtturbo.
hmm only just read this chris, sounds like a difficult one to spot exactly, i know it may be of little help but sometimes the spring on the bottom tensioner may be at an incorrect angle & can cause the sound ur hearing, even if they are new they may still give the problem ur hearing.. the tapping sound ur hearing may very well be due to u having a fresh head with larger valves & cruise springs... did ur engineer check to see if the springs had enough clearance after assembly with the new valves/cams? as u may be getting spring lock.... but apart from that without hearing the engine working its very difficult to say buddy
keep us posted.
kon
keep us posted.
kon
sx_turbo
Lifer
yeah i said when its cold, all but goes when warm,
the guy who built my short block builds race engines for a living, and de-bured my forged rods, and rebalanced the rods and pistons to within less than 0.5grams of each other, so i really cant see him fucking it up,
i just put it down to being forged lol seems to drive ok and hasnt broke yet, and done about 3-4k miles so i assume it's all good lol
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