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#1069931 - 03/16/21 05:16 PM Re: SSLance's Build thread [Re: SSLance]  
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Data comparison with Jason Bucki in a fast Beamer that ran a 42.9 compared to my 46.2. This is the first drastic difference, the first right sweeper.

[Linked Image]

I traveled 50' further and took 1.871 seconds longer in that segment, I also exited 10 mph slower.

In the next slalom we were pretty close, I was actually 0.264 seconds faster than he. Then in the left hand sweeper that you see below, I was 0.784 seconds faster.

[Linked Image]

In his video you could see his car pushing the whole second have of that sweeper and I shaved 24' off in distance and still exited at virtually the same speed.

This is the one that really killed me...

[Linked Image]

45' further and exit speed 5 mph slower = 1.140 seconds on the clock...

Basically Jason was 3 seconds faster than I and I lost all of that in those two right hand turns. That's a killer on an autocross course. That's the difference between 7th overall raw time vs 42nd.


Lance
1985 Monte Carlo SS Street Car
#1069933 - 03/16/21 10:23 PM Re: SSLance's Build thread [Re: SSLance]  
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LONG time coming for this...hoping it's the last one I'll ever put in this car...

[Linked Image]

[Linked Image]

I'll try to get it in the car in the next day or so...


Lance
1985 Monte Carlo SS Street Car
#1069936 - 03/17/21 12:46 AM Re: SSLance's Build thread [Re: SSLance]  
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Nice. I assume it will bolt right in, same axles, driveshaft should be good to go.
Curious, why Truetrac rather than put the Torsen back in the new carrier?
Bob

#1069942 - 03/17/21 02:35 AM Re: SSLance's Build thread [Re: SSLance]  
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Should bolt right in, even spec'd the same yoke. Gearfx talked me into the TruTrac and I know a lot of fast guys that run it. They taught me some tricks to help it perform. The Gleason has to go back to its owner.


Lance
1985 Monte Carlo SS Street Car
#1069943 - 03/17/21 05:46 AM Re: SSLance's Build thread [Re: SSLance]  
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Having the Truetrac in my car 5 years now can say nothing bad about it. Drive like an open rear 99.9 % of the time, that makes for a better street car. Much more forgiving in the wet, especially when cornering light throttle. The old Eaton posi scared me a few times in the wet, actually several times.
Dump the clutch on the Truetrac always two equal patches.

That is a nice center section, spec card tells it all. Is the R&P REM finished, that cool also,

Also like where they are located, Mooresville, lots of good parts come from the neck of the woods.

Did you look at that pic i sent you?
Bob

#1069945 - 03/17/21 11:33 AM Re: SSLance's Build thread [Re: SSLance]  
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Yep, REM polished...I'm after quiet street manners with this final third member.

I looked at the pic. I will have to look back at old alignment sheets but I don't remember any wheelbase irregularities on my car. I was pretty careful specing lower ballpoint placement off the frame when I relocated them and if its off, it wouldn't be by much.

Pretty sure my issue is left side weight and it was just exasperated on this particular course with oinch cones at the exit of each right hand sweeper.


Lance
1985 Monte Carlo SS Street Car
#1069946 - 03/17/21 05:18 PM Re: SSLance's Build thread [Re: SSLance]  
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Have never got that printout from the computer rack before. It shows the offset of the front and rear tires side to side as pairs. From previous wheelbase measurements I saw there was a small difference left side to right side. Not a trig guy don't know how much the right front is rearward of the left front. But do know just like the UCA mounting being rearward on the left side of most cars the crossmember could be off also.
I can only imagine when the front crossmember was welded in at the frame factory is was a "close enough", "can't see it from my house" weld job. If you remember my brother-in-law worked at the GM frame factory and welded in the front crossmember of a zillion frame running down the line. All six guys at that station had a BFH, a MIG and 1 minute to glue the crossmember in. Another complaint you hear is all the missing weld when you inspect the factory weld.

When i did the lower ball joint 11/16" forward mod on the car you could only reference off of what GM gave you. And there was no way to move the LCA pivot points fore or aft.
Bob

#1069971 - 03/19/21 01:25 PM Re: SSLance's Build thread [Re: SSLance]  
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New diff is installed but ran out of time to test drive, for sure thus weekend though.

[Linked Image]


Lance
1985 Monte Carlo SS Street Car
#1069972 - 03/19/21 01:28 PM Re: SSLance's Build thread [Re: SSLance]  
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That assembly is awesome. Good stuff.

Last edited by ramey36; 03/19/21 01:29 PM.
#1069973 - 03/19/21 01:41 PM Re: SSLance's Build thread [Re: SSLance]  
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Everything is looking good Lance. Im interested to hear about your first test run.

#1069976 - 03/19/21 03:03 PM Re: SSLance's Build thread [Re: ramey36]  
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Originally Posted by ramey36
That assembly is awesome. Good stuff.


Thanks Ramey...

Forgot to post this close up pic of the ring gear...check out all the smooth edges on the teeth...

[Linked Image]


Lance
1985 Monte Carlo SS Street Car
#1069977 - 03/19/21 03:05 PM Re: SSLance's Build thread [Re: SSLance]  
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I forgot to show you all the special delivery that got here Wednesday...

[Linked Image]

[Linked Image]

We are stoked!! Our first new car purchase in 19 years when we bought the White GMC behind the new Colorado ZR2 Bison Edition. The Wrangler Rubicon has been sold and the Bison is our new off road rig as well as daily for me, occasional work truck and our take the neighbors out to dinner vehicle which we used it to do for the very first time last night. So far we are VERY happy with it.


Lance
1985 Monte Carlo SS Street Car
#1069978 - 03/19/21 04:10 PM Re: SSLance's Build thread [Re: SSLance]  
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Nice! I love those, looks like a lot of fun. And ought to be better than a Chrysler product any day wink

I'm keeping my eye on the Colorado's on the used side. Probably still a few years out from getting one, but a similar configuration (CC, 4x4) would be my choice. Maybe an older one with plans for a v8 swap, or just leave it alone.

Anyway, looks great, and the rear on the Monte ought to be a fun ride too.


Shawn

'85 MC with budget 5.3L swap, TH350 with stock 2.14 rear end
It ain't much off the line, but it's nice on the highway
#1069985 - 03/21/21 02:24 PM Re: SSLance's Build thread [Re: SSLance]  
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Man, I've only had one sort of extended test drive with the new diff but man am I impressed. By far the quietest diff that has been in the car since the OEM 7.5" and the smoothest as well. Shifts and the transition between accel and decel are buttery smooth, the tightened up backlash really makes a difference. So far I'm very happy with the 3.70 gear ratio as well, Ithink it's the perfect mix of grunt and grace for my setup and it for sure should be easier to launch without excessive wheelspin.

I've softened up the shocks, put the floormats back in and stowed the harnesses away and it's set in street cruising mode. Goal is to put 500 easy miles on it before next race April 10.


Lance
1985 Monte Carlo SS Street Car
#1069986 - 03/21/21 03:38 PM Re: SSLance's Build thread [Re: SSLance]  
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That's a pretty ugly ring gear, was there deposits of it in the housing?
Get out there and get some miles on it.

Speaking of miles, nice truck. Did some reading on the new ride, pretty awesome off road truck. I know Az is nothing but a big dried out sand box with big hills, guess the reason for no need for a snorkel.

Thanks for the talk and measurements the other day.
Bob

#1070129 - 03/29/21 10:31 PM Re: SSLance's Build thread [Re: SSLance]  
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So I have about 250 miles on the new diff and I still love it. Smooth as butter and whisper quiet. The 3.70s seem just about perfect, 80 mph in 6th is 2,000 RPM and 15% throttle...just right.

I've been street driving it a bunch and still need to do some more, so I decided it was time to tune the AC up a bit. It's been leaking AC oil out of a connection near the Accumulator for over 5 years, but was still blowing pretty cold. Thought we could just change out the O-ring, recharge it and send it...but that was not the case. Turns out the leak was at the hose connection, where the hose meets the fitting...so a decision to redo the hoses was made and in a case of whileImatititis...morphed into this...

[Linked Image]

That's a new style condenser that should fit right into the factory mounts with maybe a bit of shimming of some sorts. The in and out ports will go on the pass side, the 180 degree fitting will head back across the front of the condenser to the compressor on the driver side and the bottom fitting will head up to the evaporator.

There is also new fittings for the Accumulator to compressor line which will go from accumulator, down to in front of the condenser across and back to the compressor. I finally get to get rid of that OEM line that has been stretched across my engine for over 10 years!!!

Lastly I picked up a threaded port style manifold that will attach the hoses to the back of the sanden compressor with 90 degree fittings which should let me point them toward the fender then run up to alongside the driver side of condenser.

[Linked Image]

Thankful for a good friend with an AC service machine in his home shop along with crimping tools and the knowledge to make this all happen. Wish us luck...this upgrade has been a LONG time coming...


Lance
1985 Monte Carlo SS Street Car
#1070136 - 03/30/21 12:09 PM Re: SSLance's Build thread [Re: SSLance]  
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In the other thread you mentioned moving where it never rains... You don't need wipers or defrost, but you definitely need AC...

This is on my project list this year. I don't have a buddy with hose crimping capability so it will be a hose shop for me, but I think I'll be able to get it taken care of and have AC blowing cold for the first time in 10 years. That will increase the number of days I can drive the car exponentially.
I think I'm going to use an LT1 F-body condenser to mount on my radiator if I can, if not I might be interested in the unit you are using and how it works out. You might be planning on it already, but make sure you install a new drier/accumulator after opening up your system. The desiccant will soak up all it can take from air exposure and not have capacity to filter out residual moisture from the refrigerant. Moisture in the system turns to acid and causes all kinds of problems.


Shawn

'85 MC with budget 5.3L swap, TH350 with stock 2.14 rear end
It ain't much off the line, but it's nice on the highway
#1070209 - 04/03/21 08:36 PM Re: SSLance's Build thread [Re: SSLance]  
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New AC setup is installed and functional... Install was pretty painless, I had to notch out a hole in the lower passenger side of the core support to give room for the 90* fitting coming out of the bottom of the new condenser and we had to reconfigure the upper condenser mounts a bit, but other than that...it all went in as planned.

Love the new look, no more 36 year old hoses stretched across the engine.

[Linked Image]

Took 2# 11oz of freon to get it evened out and cooling down to about 45 degrees.

Bring on that Phoenix summer heat baby, we are ready for it now!!


Lance
1985 Monte Carlo SS Street Car
#1070210 - 04/03/21 09:29 PM Re: SSLance's Build thread [Re: SSLance]  
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That looks really good Lance.! Cleans it up alot.

#1070263 - 04/07/21 01:11 PM Re: SSLance's Build thread [Re: SSLance]  
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Went for a long cruise up to Tortilla Flats yesterday with my brother and a friend on their Harleys. Had a blast riding the last 15 miles up the canyon, 15 mph corners at 40 mph without even the hint of an issue. AC blew ice cold the whole way as well. Diff should be broke in now, ready for an oil change and a race on Saturday.

[Linked Image]

Was funny though, my brother complained the air coming off the back of my car on the highway was dirtier than behind most semis. Says it feels like the air tumbles off the back of the car instead of flows smooth. And no, an aerocoupe mod is NOT on the upgrade list any time soon... laugh


Lance
1985 Monte Carlo SS Street Car
#1070277 - 04/08/21 09:08 PM Re: SSLance's Build thread [Re: SSLance]  
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Glad the A/C is dialed in, do you notice any difference when the car is heat soak and sitting. That was when I knew i wasn't happy with the 134 swap. It was fine when moving, lots of air though the condenser. On a trip to Memphis in July we sit for an hour on the four lane, an accident a mile up the road. Simply cleaned out the old 134, changed accumulator, new line set, O-rings, valve, GM mineral oil, and weighed in the stock lbs of 12. Yes didn't mention bought an R12 gauge manifold, borrowed the vac pump and scale but had plenty of 12. The R12 system after that recharge worked better than the original factory charge. That i credit to the dual Spal electric fans which cycle off the high pressure cycling switch that is now installed in the stock high pressure service port. Most fan controllers will cycle the fans on-off as the compressor is cycled on-off.

Your EFI is now controlling the fans, like a late model EFI car does. Is your current setup running a trinary switch or just cycling when the compressor turns on.

Always nice to get the car out for some exercise. Much different terrain out there in the SW and tourist traps. Here we have blast furnaces now used as the back drop for concerts, roads to get there made for the Model A, not the Model 3.

Put about 50 miles on the car this week, roads are pure junk for the lack of maintenance and a long Winter, which has lasted a little over a year now. Must be the old bones and lack of exercise but the car seemed noticeable harsher, more NVH, noisier, more work to drive. I've guessing it's just me.

Track day this weekend? Keep us posted. Interested in what your thoughts are for track and street pressures.VIDEOS.
Bob

#1070282 - 04/09/21 02:03 PM Re: SSLance's Build thread [Re: SSLance]  
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I have the fans set to come on low when the AC is on so they run steady if on. I know it's not optimal for them to be running when at highway speeds but it's fine. It blows ice cold, even when stopped in traffic well heat soaked. It's bad arse now...highly recommend this upgrade.


Lance
1985 Monte Carlo SS Street Car
#1070284 - 04/09/21 10:36 PM Re: SSLance's Build thread [Re: SSLance]  
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16.06 mpg on my spirited 150 mile round trip up the hills Tuesday. Most always at 80 mph or banging gears in the twisties...

I'll take that from a 550 hp fire breathing monster...


Lance
1985 Monte Carlo SS Street Car
#1070380 - 04/14/21 06:46 PM Re: SSLance's Build thread [Re: SSLance]  
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Lance - can you provide dimensions and source for your condenser? I have passenger side AC and replaced my condenser 12 years ago with GM part 52499072 (Not sure what design this is?), and aluminum core to which we welded appropriate fittings. Should we just go for max size or is that (besides adding expense) counter-productive? I am using braided stainless lines so exact location for fittings not critical.
Thoughts please.
Gordon


#1070400 - 04/15/21 07:48 PM Re: SSLance's Build thread [Re: SSLance]  
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Extra size on a condenser coil is rarely a problem. You will run lower high side pressures, lower low side pressures, and get colder evaporator temps. If you are far enough away from stock sizes, have the equipment to do so, and feel like tinkering, you could try swapping orifice tubes to maximize cooling where you want it. Play with orifice sizes, charge amount, or even a variable orifice or TXV. But honestly, that's the type of project for a bored, retired HVAC engineer... You should be fine getting a bigger condenser, just charge based on the low side pressure rather than the high side pressure (since it will be lower with the larger coil).


Shawn

'85 MC with budget 5.3L swap, TH350 with stock 2.14 rear end
It ain't much off the line, but it's nice on the highway
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