Virginia Motor Sport Club Discussion Forums
October 20, 2017, 06:27:19 PM *
Welcome, Guest. Please login or register.

Login with username, password and session length
News:
 
  Home Help Search Login Register  
  Show Posts
Pages: 1 2 [3] 4 5 ... 35
51  General / Autos and Autosport / Re: Dominion Raceway on: July 26, 2016, 02:43:03 PM
Well so much for DR, it looks like SCCA cancelled all "Track night in America" events. Sounds like there was a falling out, not just the schedule delay.

Bummer - I was all set to go up there Thursday.
52  General / Autos and Autosport / Re: Factory Five Cobra Build on: July 09, 2016, 06:09:35 PM
So the last few weekends were pretty productive.  Jeff helped me mount the coil next to the power steering pump.  It's on a simple bracket made out of a piece of steel plate.




I mounted the ECU and cleaned up the wiring.  All of the stuff hanging off to the right side is extra.  I'll remove it once I know it's working.




I also wired up the dash so that we could keep an eye on things.






After getting a replacement set of headers because the flange from the driver's side header to the sidepipe wasn't welded, I found that we had to grind the flange to the head a bit in order to access the spark plugs.




Once we got the headers mounted up again, we were able to fire it up (click the image for a video).

CobraStart


And here is one of the shakedown runs at the practice autocross.  Camera could have been aimed better...oh well.

So as of now, the car runs and drives.  The ECU is a FAST EZ EFI 2.0 that came with the motor.  It's self-learning, and only self-learning...which means I can't manually tune it.  Looking online, I don't think there is an aftermarket ECU that gets worse reviews.  The car runs rich and I can't manually tune it.  The self-learning is also very finicky - it doesn't self-learn below 2% throttle, and 2% throttle is quite a lot for the car.  You can hear the car breaking up towards the finish in the video.  I believe it's because of how rich it was running.  I tricked the ECU into pulling out fuel by telling it the motor was 351ci (supposedly, it's 408) and it had 65lb injectors (it has 50lb injectors).  That got rid of the hesitation, but it's still rich.  I'm going to pull the plugs out of it and make sure they look even.  Will also put a separate wideband into the other exhaust bank so that I can keep an eye on it.  I'm also going to buy an ECU I can actually tune.  FAST sells one that uses the same wiring harness, so I won't have to re-do everything.
53  General / Classifieds / Re: 1992 Miata project on: July 07, 2016, 06:03:16 PM
Buy it, Paul!  I'll sell you some fenders real cheap Smiley

Scott - what suspension is on it?
54  General / Open Forum / Re: My Garage Build - The Airboxer Garage on: June 28, 2016, 04:09:50 AM
nice!  how hot does the outer skin get when it's on?
55  General / Autos and Autosport / Re: Factory Five Cobra Build on: June 19, 2016, 02:27:10 PM
Well, made some good progress this weekend.  I have a few sensors left to mount, including the oxygen sensor, so Paul came over to give me a hand mounting the body and exhaust so we could mark where the sensor will go and make sure it doesn't hit anything.




With that done, I got back to wiring.  I needed to wire the ECU and ignition.  I decided to focus on the ignition first.  I was originally planning on mounting them both inside the car, but have read that the FAST ECUs are really sensitive to electrical interference - which the ignition creates a lot of.  Paul and I decided it would be better to mount the ignition box at the front of the engine compartment.  I designed a mount, 3D printed it and mounted everything up on Sunday.









I spent Sunday running the ignition wires.  This included cutting open the chassis harness so I could run the power wires back to the battery with the existing harness.  Kind of a pain, but it's coming out well.  I still need to mount the coil and supply a 12V switched source, but that's it.  Next weekend, I'm going to try to mount the ECU and finish wiring it.
56  General / Autos and Autosport / Re: Factory Five Cobra Build on: June 12, 2016, 06:46:46 PM
Well, I think I'm done with the engine bay wiring harness, and I have diagrammed out the rest of the harness in the car.  I need to pick a spot to mount the ECU and ignition so that I can make the rest of the harness.

I mounted the plate that I 3D printed and installed the flange-mount connectors.






I cut the extra wire from the harness and terminated them each into two connectors.  I'm going to wait to shrink the heat shrink until I know I didn't forget anything.






In addition to those, I separated out the wiring for the magnetic pickup and ran it in some shielded loom to prevent any electrical interference.  I put a separate firewall connector closer to the center of the car so it didn't need to travel along the battery cables.




Hopefully just a few more weekends and I can fire the car up.
57  General Category / Ask the Competition Committee / Re: Mini Countryman autocross? on: June 09, 2016, 06:26:55 PM
Our insurance company covers us as long as we follow SCCA vehicle eligibility and safety rules, nothing beyond that.  So unfortunately, you couldn't autocross your Countryman.  While it is rare, several club members have witnessed cars roll over at autocrosses while mid-turn.
58  General / Autos and Autosport / Re: Factory Five Cobra Build on: June 05, 2016, 05:18:28 PM
Well, I'm pretty sure I found the terminals for the distributor online.  Hopefully they come in this week.  I took the day to add the wires I forgot to run for the gauges and loomed it all the way to the firewall.




They will go through the firewall where the oval hole is, but I don't want to have to pull the dash to disconnect the ECU or remove all of the connectors from the engine in order to remove it.  I've got some flanged wiring connectors that I can use.






In order to leave room for body wiring and expansion in the future, I decided to use the two rectangular connectors and put a big grommet above them.  Rather than trying to cut a large circular hole, two rectangular holes, and drill a bunch of holes for the mounting bolts, I laid out a plate that I'll 3D print and use to mount all the wiring to.  Now I just need to enlarge the existing hole in the aluminum so everything runs through it.




I also drilled a hole in the thermostat housing and ordered a tap so I can mount the water temp sender.  Hopefully I can button that up plus the engine wiring next weekend and move onto wiring the rest of the car.
59  General / Autos and Autosport / Re: Factory Five Cobra Build on: June 04, 2016, 03:55:39 PM
Well, after getting Paul's VW running for Hyperfest, I'm back to working on the Cobra.  I told myself I was going to just hack the wiring together quick and dirty to get the car running, and then clean it up over the winter, but I can't help myself.  I pulled apart the harness that came with the motor and have started to re-route it and clean it up.

There was a bunch of extra wiring because the engine harness is generic.  There was an extra 10 feet of wiring on the fuel pressure sensor!  You can see it curled up on the ground in this pic.  The engine harness is the one with the grommet and all the loom on it.




Loom pulled off and everything spread out




One thing I didn't like was that there were adapter connectors between the harness and some components - MAP sensor, IAC valve, TPS (not shown).  That makes it difficult to bundle everything up, so I cut the adapter connectors out and re-terminated the ends.






Then I started bundling things together, looming the individual connectors, and looming the bundles.  It looks real clean.










Unfortunately, I forgot to run a few wires for the gauge senders, so I'm pulling everything back apart to run them.  Also, I noticed the connector on the distributor pickup was messed up.  Here is a picture of an assembled connector.



One of the terminals on the pickup connector was pushed in.  If anyone knows where I can get one of these terminals, let me know.  It's the one on the top in the picture below.  Compared to the Weather Pack terminal on the bottom, it's almost the same size - the length of the tip to the retaining tangs is only 10mm vs the Weather Pack's 15mm though.

60  General / Autos and Autosport / Re: Civic engine swap on: May 28, 2016, 03:30:06 AM
You could talk to J-Spec Auto for a motor and trans (you'll need a trans, too).  I assume you're looking for a B18C out of a GS-R?  The B18Bs only make like 140hp, so I'd skip them.

This swap is pretty simple and there is a ton of info/support online (like this guide).  I'd consider doing it yourself if you have somewhere to work on it.  If not, there may be a coupe folks at the autocrosses you could talk to.
61  General / Technical Help / Re: Car scales and corner weight? on: May 10, 2016, 11:15:31 AM
I'll try to find some time - the scales don't fit in my Miata, so it needs to be some time I'm driving someone else's car or towing my junk there.  I'd really like to have my Dad's Cobra running for the practice day in July, which might work out well for me to bring the scales.
62  General / Autos and Autosport / Re: Street Touring brake cooling? on: May 09, 2016, 06:56:02 AM
Miata with a v8 swap it is

I've got some Miatas I'll sell you.  Conveniently, I also have a 331 and T5.  You're basically half way there!

Smiley
63  General / Technical Help / Re: Car scales and corner weight? on: May 03, 2016, 07:18:39 PM
So, my plan is still to bring the scales out on Saturday, unless it's raining.  If it rains, I'll bring them Sunday if it is dry out then.
64  General / Autos and Autosport / Re: Street Touring brake cooling? on: May 02, 2016, 05:00:47 PM
I'm interested in knowing the answer to this as well.

You could always come to one of the prepared/modified classes Smiley
65  Pictures and Media / Pictures and Media from Events / Re: VMP 4/24/2016 Media on: April 27, 2016, 03:57:27 PM

I get an error when trying to open the link.
66  General / Autos and Autosport / Re: Factory Five Cobra Build on: April 24, 2016, 06:08:03 PM
Well, I've been doing a bunch of piddly things over the past few weeks, so I don't have a ton of pics.  I do keep finding things that the "professional" engine builder did wrong.  Makes me worry about the rest of the motor.  Anyways, I think I've got the cooling system and power steering almost buttoned up.

I mounted the coolant overflow next to the brake reservoirs.




I was worried I might have to lower the height of the radiator cap, but after laying the hood on, we've got plenty of room.






So, with everything buttoned up, I pulled a vacuum on the cooling system to see if it had any leaks.  There was a leak somewhere - large enough that you could hear air being sucked in from somewhere around the upper radiator hose and thermostat housing.  I checked the hose clamps on the hoses and checked the heater hose fitting in the intake manifold - no leaks.  I poked around a bit and found that the thermostat housing was leaking.  Not normally a big deal, but the reason why it was leaking certainly is - it's the wrong housing!

You can see here the blue lines outline where the bypass hose is on the housing.  That tube should be ~5mm further inside of the mating surface on the intake manifold.  I'm sticking a pick in the back of it and I could get the tip of the pick inside the housing.



Here you can see there is ~82mm between the outside of the bypass hole on the manifold and the lower mounting bolt.  On the housing that was installed, there is ~88mm.  Thankfully, we had the stock housing off my dad's old 302, which fits correctly.





Anyways, we threw it back together.  There are some extremely slow leaks (loses 1psi of vacuum after about 15 seconds) that I pinpointed to the paper gaskets on the thermostat housing and water pump.  I think it's just because they're dry.  Once there is water in the system, it should be fine.  Before I do that, I think I'm going to pull the valve covers though and see if I see anything else "off" about the motor.  I'm debating whether or not to pull the whole motor apart.  On the one hand, it would probably mean an extra month before getting the car running - and if it blew up, it would be my fault.  On the other hand, I'm fairly skeptical about the quality based on the number of small issues we've seen.  I've got some time to think about it while we try to get Paul's car ready for Hyperfest.
67  General / Autos and Autosport / Re: 1st Gen Ram Rebuild on: April 24, 2016, 05:35:06 PM
Well, we finally got the cab off the parts truck last weekend and were able to roll the frame out of the garage so it's no longer taking up room.



I also didn't want the cab to take up and floor space since it'll be a while before I start any real work on the car, so we rolled some scaffolding under it while it was on the lift, screwed some supports to it, and let the truck down.  Now it's tucked up neatly in the corner.



I did also find a pretty bad coolant leak in the actual truck.  All the hoses had been replaced, but there are two rubber caps that appeared to be original...and extremely dry rotted.  Even with the engine off, I could touch the cap and a small stream of coolant would shoot out.  I replaced those as well as the thermostat at the same time.



Hopefully this is it until I wrap up the Cobra.
68  Results / Autocross / Re: April 2016 Results on: April 24, 2016, 05:02:00 PM
Thanks for posting quickly.  I like the formatting!
69  Results / Autocross / Re: Run by class on: April 23, 2016, 04:15:09 AM
I heard talk of rotating around, though some of the classes that have a small number of people may move around differently in order to balance out the numbers.
70  General / Open Forum / Re: Street Freaks on: April 11, 2016, 05:08:23 PM
I enjoyed the show.  Looking forward to more.
71  General / Technical Help / Re: Car scales and corner weight? on: April 02, 2016, 04:04:27 AM
I could bring the scales to the Practice Autocross in May.  It would give you total weight and rough balance.  Highly dependent on how flat and level an area there is to set them up.
72  General / Autos and Autosport / Re: Factory Five Cobra Build on: March 27, 2016, 03:54:53 PM
We're trying to find a nice shade of maroon.  Maybe something like this, with no stripes.

73  General Category / Announcements / Re: Autocross Point series on: March 27, 2016, 03:53:00 PM
Also, I raced yesterday, but not as a member, if i choose to become a member, can I get my points for that race added to the championship series?

If you join this year, your points from this race will count.  Joining is easy and gets you your permanent number, plus the $5 discount each event.  Here's the link Smiley
74  General / Autos and Autosport / Re: Factory Five Cobra Build on: March 20, 2016, 03:16:46 AM
Thanks, Engelbert.  The 3D printing is pretty interesting.  I've wanted one for a few years and this seemed like a good excuse to buy one.  If you need anything done, let me know.  It's really good for small parts and brackets.
75  General / Autos and Autosport / Re: Factory Five Cobra Build on: March 19, 2016, 04:07:52 PM
Well, I finally buttoned up the brake hydraulics.  I got to use the 3d printer to print out a grommet where the soft brake lines, hard brake lines, and wiring harness come through the firewall.  I printed it in two pieces to sandwich the firewall.  I also left opposite-facing slots in it where the wiring harness comes through so that I could slip it over the harness, instead of trying to pull the harness through.

Here is the hole in the firewall that I've gotta put the 4 brake lines and wiring harness through




And the grommet




I installed it around the wiring harness and then pulled the soft brake lines from the reservoirs to the master cylinders




Once that was in, I pushed the hardline through, bent up and flared the portion inside the car that connects to the master cylinders






I filled the master cylinders and pressure bled the system.  I found some leaks, but thankfully after tightening the fittings down some more, everything seems to be fine.  The stainless steel lines need a lot of torque.  I think I'm gonna try and button up the cooling system next.
Pages: 1 2 [3] 4 5 ... 35
Copyright © 2017 Virginia Motor Sport Club
Website developed & hosted by Autocross.US