1967 GTO LQ4 (L92/LS3) swap
#142
TECH Fanatic
On my blower the 2 ports you have capped with yellow are for PCV and the brake booster. I use the small one for my HVAC system source. As yours, mine is right at the inlet to the compressor housing. I don,t see why you could not use the one on the PS as well. Mine always starts and idles as a stock NA engine regardless of temp. I think you are on the right track for a vac leak.
If yours has been sitting for a long time the steam would not be alarming due to condensation in the exhaust system. If it does not go away after you reach full operating temps, I would be looking for a problem.
If yours has been sitting for a long time the steam would not be alarming due to condensation in the exhaust system. If it does not go away after you reach full operating temps, I would be looking for a problem.
#143
Launching!
Thread Starter
OldGoat, what size injectors are you running? Mine are 850cc (82lb), which was recommended, but that seems big now. Unless the injectors are much better now. So it could be pig rich with the current tune for the stock (42lb?) injectors.
Also, I haven't even let the car warm up and get into closed loop yet.
Pretty sure vacuum ports, ps or ds, are all the same.
Also, I haven't even let the car warm up and get into closed loop yet.
Pretty sure vacuum ports, ps or ds, are all the same.
#144
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Location: on the dyno tuning in MD
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OldGoat, what size injectors are you running? Mine are 850cc (82lb), which was recommended, but that seems big now. Unless the injectors are much better now. So it could be pig rich with the current tune for the stock (42lb?) injectors.
Also, I haven't even let the car warm up and get into closed loop yet.
Pretty sure vacuum ports, ps or ds, are all the same.
Also, I haven't even let the car warm up and get into closed loop yet.
Pretty sure vacuum ports, ps or ds, are all the same.
#145
TECH Fanatic
I have the 42lb that came with the Magnusson kit. I had them sonic cleaned before I ran them. I have never had any issues at all. Some tuners said that I should go bigger to see the real big numbers, but that is not what the car is all about.
#147
Launching!
Thread Starter
Hmmm.....good to know. Thank you. Guess I'll wait to get it tuned before running it anymore. At least I know it runs. Hopefully 30 seconds of running didn't hurt anything.
#149
Launching!
Thread Starter
#150
Launching!
Thread Starter
Had to get from the 3/16" barb on the blower manifold to the 1/8 hard tubing for the boost gauge. The boost gauge comes with a bunch of NPT to compression fitting adaptors, but I just bought these nice stainless NPT to tube fittings from McMaster. I think it was the simplest, cleanest way to do it. Plus I hate compression fittings. Push-to-connect tube fittings are fantastic.
Oil breather for the PCV system. I just realized I don't have pictures of the RevXtreme catch can I installed. Will add those later.
Oil breather for the PCV system. I just realized I don't have pictures of the RevXtreme catch can I installed. Will add those later.
#151
Launching!
Thread Starter
PCV catch can and plumbing. I'm not crazy about where it is, but it was easy to bolt the bracket to the bracket I made for the supercharger coolant reservoir. Plus the plumbing was pretty easy right here, plus the drain was in a good spot and the catch can is in a good spot. Function over form I guess. I just don't like clogging up the engine compartment. It was much cleaner without the blower and related accessories. Small price to pay I suppose.
Driver's side valve cover - rear
Driver's side valve cover - rear
#152
Launching!
Thread Starter
#154
Launching!
Thread Starter
#155
Launching!
Thread Starter
Wideband O2 sensor is installed.
I put a small notch in the hood bracing to clear the intake tubing. You can't see the detail in these pics, but it came out OK. Not perfect, but I'm happy with it. I only weld a few times a year. Sheet metal is a pain....even carefully "stitching", I blew a couple holes that I had to fill.
Just waiting for my tuner to call me back so I can schedule a dyno session and get this baby tuned!
Before.
After. (Just primed for now.) Will paint tonight.
Clearance After.
I put a small notch in the hood bracing to clear the intake tubing. You can't see the detail in these pics, but it came out OK. Not perfect, but I'm happy with it. I only weld a few times a year. Sheet metal is a pain....even carefully "stitching", I blew a couple holes that I had to fill.
Just waiting for my tuner to call me back so I can schedule a dyno session and get this baby tuned!
Before.
After. (Just primed for now.) Will paint tonight.
Clearance After.
#157
Launching!
Thread Starter
No problem on the cam. I love it. Perfect cam for good power with great driveability. The 118 LSA is awesome. But PM specific questions.
-Jeff
#158
Launching!
Thread Starter
My friend noticed my PCV setup with the oil filler cap breather and pointed out that pulling unmetered air is probably a bad idea (and he was right) so I changed it to pull from the air intake tube. Not sure why I didn't realize that, guess I didn't fully understand the PCV until thinking about it for more than 10 seconds.
I put my fan shroud on too. Install is now completely finished and I'm just waiting to hear back from my tuner. He's awesome, but not always very responsive. Hopefully he'll call back soon. No rush, I probably have a month before the snow and salt is clear from the roads here in NH.
I put my fan shroud on too. Install is now completely finished and I'm just waiting to hear back from my tuner. He's awesome, but not always very responsive. Hopefully he'll call back soon. No rush, I probably have a month before the snow and salt is clear from the roads here in NH.
#159
Launching!
Thread Starter
Finally hit the dyno tonight. 517 RWHP. Although that's pretty awesome, I can't say I'm not dissappointed with that number. The car, N/A, put down 420 HP, so to get less than 100 RWHP from 8.5psi on a 2.3L blower is not very impressive. Granted, weather was terrible for HP (29.1 barometer, 60% humidity), but I still thought it'd be closer to 550. But maybe my LS1 exhaust manifolds are choking the motor more than I thought. Maybe next winter I'll consider long tubes, even though I've always been dead set against them.
OK, onto the dyno graph and video! Always fun to be on the dyno....motorhead glory!
OK, onto the dyno graph and video! Always fun to be on the dyno....motorhead glory!
Last edited by 67 goat; 04-08-2014 at 08:51 PM.