All Things Chev

[PeeBee]

I have a 'ticking ' sound at idle when cold, decreases when it warms up, thinking it might be a bearing with a dicky roller or ball race on one of the front of engine accessories- hope its not the PS pump!

[poindexter]

anybody with a 6.5 running endless air compressor? if so, what size receiver do you have.
looking at replacing the a/c on my 6.5 serpentine for a EA90, as the electric compressors are not cost effective for what they do.

[PeeBee]

anybody with a 6.5 running endless air compressor? if so, what size receiver do you have.
looking at replacing the a/c on my 6.5 serpentine for a EA90, as the electric compressors are not cost effective for what they do.

Funny enough I have an endless air compressor for sale and a converted sanden compressor for sale - PM for details. Both running vee belts, neither even done an rpm. The genuine is missing one mount ear though. I could not get mine to fit when running the vee belt but then I was running the a/c as well

[poindexter]

Time for a little write up on putting the 6L90 trans behind the 6.5.

The 6L80 & 6L90 are almost identical in physical shape and size, the 6L90 is about 17mm ish longer,
Both will bolt right up to the 6.5.
On the 6L90 and some 6L80 trans, you will only pick up 5 of the 6 mounting bolts, the "2 o'clock" bolt on the drivers side is missing on the trans.
The early 6L80 will have that missing bolt hole available, and that convertor housing, which is integral with the oil pump housing will interchange with the 6L90.
There is no provision on the 6.5 to pick up the "12 o'clock" bolt holes, and there are 2 bolt holes available on the bottom of the trans convertor housing, but no provision on the 6.5 to pick these up.
I have had bosses welded to the aluminium oil pan, with brackets to pick these up, to aide "beaming strength".
The convertor is where it starts to get interesting.
In the US, there is a version of the 6L90 that is used behind the 6.6 duramax diesel. that convertor is what makes this trans doable behind the 6.5.
I got a trans specialist to modify my convertor to match the 6.5 flex plate, and the 6.6 internals to make this viable, as the 6.6 max rpm is 3400, not the 6600 of the donor vehicle trans (HSV GTS)
An 3400 rpm will suit the 6.5.
Marks 4WD makes the adaptor to the Nissan transfer case, just don't use a 4x4 trans as the splines won't match.

Now, it's HSV GTS shifter on the trans tunnel with either a cable or rod connection, and you're all done....

One small problem, trans control, most will say a stand alone controller is not available, but there is.
Zero Gravity sell one and it comes with a harness, requires just a TPS and engine rpm to make the trans work.
Also, that US vehicle that has the 6.6 and 6L90 combo, will also supply the initial calibration that gets loaded into the trans.

My trans is at the moment in "limp mode" as I haven't got those 2 sensors connected. It still drives, but only in 4th, no TC lockup and I get reverse.
I chose to drive in "limp mode" in order to get the airbag replaced before the end of the year and avoid the rego getting cancelled.

So I'm getting close, keen to see how the trans handles the 6.5, as the is no provision for a torque cut on upshift.....

[PeeBee]

I may have found the 'ticking ' noise I mentioned. On start up this annoying ticking sounds is quite noticeable. i thought it was the same noise some have reported with the fluid damper installation, however that didn't sound at all right as the damper can't move. Anyway, dropped the belt off and checked each pully and found the auto tensioner wobbling a bit and the clamping bolt finger tight - odd because this was loctite'd when I did the swap over. Anyway, the issue is the clearance between the brg bore and the mount peg on the adjuster - there would be a good 0.5 mm gap, its as sloppy as, so relies only on the clamp bolt to hold it and i am sure the tension of the bolt pushed it to one side. Anyway, i have bogged up the clearance with a liquid metal product and once its set will reinstate it. I have spoken to BD, 'never heard of this before ......., anyway, waiting for their solution ie a correctly fitting brg to stub and that should fix things. i drove the vehicle back into the garage and no noise, so hope this is the culprit. There was a slight amount of axial movement on the PS pump so this would be the next focus if the tensioner hypothesis is incorrect.

Update - BD checked all their stock and they are the same, sloppy joe fit, thousands of them out there so I have asked for a precision one to eliminate this, and the PS pump axial movement is normal, and the same happens on the vac pump, so maybe I have not found the noise source?

[MB]

I may have found the 'ticking ' noise I mentioned. On start up this annoying ticking sounds is quite noticeable.

Wacky old school idea was taught once upon a time and can hopefully work for you too Phil Mate!
A safe shortest length of garden or siphon hose held against ones ear intake noise hole whilst searching the troublesome tone area throughout your engine bay should pinpoint peak decibels at the open end
Patent Pending: “M.iraculous B.enderphone”



Sent from my iPhone using Tapatalk

[PeeBee]

Well, the noise is a lot less pronounced and does not last for anywhere near as long now that the bearing to shaft void has been taken up with liquid metal. Certainly nothing like it was, so think I am on the right track, or its now just a sticky stiff 8 track belt - trying not to get over anxious about this right now.
Took it out for a burl, new tyres, wants to float around a bit, so looking at pressures, but they dont look visually out of sorts - might just be a different pattern thing. Speedo is out by 10klm/hr, so probably should change the gearbox speedo gear - there was a chart I saw 'somewhere', can anyone post it up, shows the gear tooth number. I am going from original 32" to 33".
Tried out the water spray system today - total dud. not enough water/mist too fine, so back to looking at nozzle and spray combo's when I get a chance.
Had to modify the belly tank fill pipe as the offset on the rims leave a lot less clearance inside the guards - wasn't that difficult, just squashed the tube to generate some additional room and put it back together.
Need to get the a/c system pressure re-checked as the Interchiller is not as effective now it seems, but then again, it could be my jinking around with the external heat exchanger add on that's nobbling it - will get to the bottom of it soon enough - the heat exchanger is the only thing that has changed and the performance has gone to OK to not quite OK.

[PeeBee]

OK, ticking noise resolved. The Gates greenline or fleetline belts have a tacky back surface. This tackiness is releasing on the back side running pulleys it seems with a 'pop'. I took the vehicle down to the mechanic I use and he listened then went into the workshop to return with a graphite puffer. He applied the graphite to the back side of the belt and at the idler pulleys and the noise stopped instantly. Happy happy days. Still waiting for advice on the precision pulley from Brunswick - might have to say i will buy another motor to get them interested in responding i think.

Update - BD came back with a cost of $150 for the revised pulley which involves machining and putting a sleeve on the existing tensioner arm, then fitting a different ball bearing unit to the pulley with an increase bore size, so ordered that. Just kicked the truck up again now that everything has cooled down and the clicking is definitely gone. One thing to note is that the various belt noise sprays on the market don't work well with multi vee configured belts, more round and Vee belts.

[PeeBee]

Well guys, good news, most unexpected, but Brunswick have decided to supply and send the new pulley assy for free - yep, no charge on the basis I guess that this configuration should never have been adopted to begin with. Absolutely floored me.

[poindexter]

20201226_152956.jpg

ripped the interior out chasing that knocking noise since I put the 6.5 in......
sort of sounds like rolling thunder, oh well, might as well put some sound deadener in then I suppose, will keep me busy for a while me thinks....