Project 3400 Roller Cam Block (Page 15/82)
lou_dias MAY 10, 09:00 AM
Update:

Looks like most of the welds are re-done in the individual tubes. They still need to chop off the EGR port (which I had requested EGR-less from Trueleo to begin with) and seal that off completely as that's another place with leaks. Looks like they still need to touch up around the neck still. May not be done this afternoon as they have production to get out.

The supervisor said that even the flat metal areas seem to be pourous and leak under high pressure on the throttle body area of the neck...
Maybe I can splatter JB Weld to cover that then paint... They are using higher pressure air than I would see driving so it may be ok.
Francis T MAY 11, 08:28 PM

quote
Originally posted by mtownfiero:

Someday we should change how the coils are mounted. I dont think the spot where they are currently is strong enough or cool enough since its right above the headers to be good for the icm. Also you could try checking to see if there are still leaks in the intake using a propane torch bottle.



When we ship opur headers we provide standoffs that let the customer turn the coild 180 degs and raise up both of which move it away from the Y pipe and EGR. No biggie to do, just lenghten a few wires.

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trueleo.com
RSpiderII@aol.com

mtownfiero MAY 11, 09:14 PM
Lou actually has the DIS coils now, since the 7730 swap. So the way i last remember it being mounted was by i think 2 of the 4 possible bolts which puts some strain on the bracket but also traps heat right under them too.
lou_dias MAY 12, 01:31 PM
I really think some of the cutting-out had to do with the coil-pack bouncing around. I added some more wire-ties over a month ago and that was reduced. Most of my drivability problems seem to be with the codes 33 and 15 due to the misses on the welds of the intake. I'd step on the gas and the car would bog down. Sometimes I'd go tap the gas as I shift into first from a stop light and it would just stall. I'd have to floor it while the starter cranked to start running again.

I ended up JB Welding the thing to hell and back yesterday before painting it blood red and handing it to my mechanic at 5pm. With luck, it will be on the car today. I got sick of waiting for the guys at work to get around to it. They all said it was a nightmare to fix. In the end JB Weld was the easiest solution. I just hope I got it all, I got sick and tired of waiting for them. Hopefully the high-temp engine paint filled in anything I might have missed...

X fingers
Jncomutt MAY 12, 03:16 PM
Wow, what bad luck, I'd think these would be pressure tested. I pressure tested my entire intake side when I put the turbo on and found a bunch of small little leaks. Most of mine were due to crappy t-bolt clamps, but still a PITA nonetheless. Hopefully all works out well for ya.
Francis T MAY 12, 10:38 PM

quote
Originally posted by Jncomutt:

Wow, what bad luck, I'd think these would be pressure tested. I pressure tested my entire intake side when I put the turbo on and found a bunch of small little leaks. Most of mine were due to crappy t-bolt clamps, but still a PITA nonetheless. Hopefully all works out well for ya.



I pressure test every intake and header and thus don't understand why the leaks? Perhaps we should apply pressure and vacuum for the test? Anyway, I will gladly fix them if returned to us. We had one intake come back recently becaused the guy's machanic ruined the powder coating with some kind of slovant. I stripped it and redid it, no charge. A few people like to grind welds down - I know Lou wasen't one- and create leaks.
mtownfiero MAY 12, 11:03 PM
Lou's intake from the start i could tell was going to have leaks. I dont know what happened with the welding or what ever but i noticed it pretty quickly before i had even put it on the car?
Francis T MAY 12, 11:11 PM

quote
Originally posted by mtownfiero:

Lou's intake from the start i could tell was going to have leaks. I dont know what happened with the welding or what ever but i noticed it pretty quickly before i had even put it on the car?



Was it a new one from us. if so he should have given us a call. We back what we sell.

We did sell some old prototypes a few years back that were not powder coated AS-IS. Is it one those brought from a third party?
mtownfiero MAY 12, 11:19 PM
no he had this one custom made by you guys, it used an lt1 (?) twin butterfly throttle body. At the time i think he only had a couple weeks or so until the races he uses the car in so he didnt want to send it back and leave the car undriveable since it was already apart waiting for the swap.
lou_dias MAY 13, 07:51 AM
The sandblasting may have exposed more leaks but there were some obvious ones even with the base coating you had on there.
I JB Welded it and after several drives last night after I picked it up from the mechanic, I no longer have code 33 coming up. Now only code 15 comes up, which is O2 rich fuel.

What's done is done. Time to tune it.

Andrew, hopefully I can meet up with you on Saturday maybe ~1pm and do a quick data log run. You'll find it drives much better now. I'd love to get some Bosch System 3 injectors. That's probably my last problem...