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#16
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I Totally agree with the mechanical mods taking ALL precedence, right behind safety.
That said, at the speeds mentioned lift WILL be a factor in handling. A slight nose down rake of maybe 1-2 degrees will help tremendously. This will put any kind of wing/spoiler well into the airflow off the rear of the greenhouse. Closing up the factory grille area will add a slight amount of downforce on the front, and cut the CD slightly. A deeper airdam is a great idea. The one from Stevesby is deeper, and has a larger opening. The aftermarket skirts don't lower the bodywork any. The rubber "baseboard" moldings I suggested WILL lower the bodywork, preventing air from getting under the car. Air under the car = lift, lift +speed= scary handling Yes, Subaru spent millions to get the CD of this car down to .29, but they weren't concerned with aerodynamic lift, just drag. The gorgeous rounded body of the SVX WILL build lift over 130mph. My '74 MustangII with a 5.0 HO & AOD trans would achieve 140+ mph, BUT at that speed the lift overcame gravity to literally get the car airborne.
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[SIGPIC]http://www.subaru-svx.net/forum/image.php?type=sigpic&userid=5569&dateline=1207440 507[/SIGPIC] Naught but by the grace of God "42" Current Stable By Age:'89 Subaru XT6 Silver "Audrey" as in Hepburn '96 SVX LSi #767Brilliant Red "Lil Red" Now on the front burner. Looking for a totalled, but running parts car. Last edited by crazyhorse; 11-30-2007 at 01:21 PM. |
#17
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Due to the area and road rules were I live my car has seen plenty of 120 mph and some 140 plus speeds. The areodynamics of the car won't be a problem as long as you have the back wing. The struts & springs need to be changed as they cann't handle that speed unless the road is perfect especily on corners etc.
My next statement every one will disagree with but I run standard brakes except the discs are drilled and sloted. The trick is to remove the dust cover from the back of the brakes to allow cooling. If you check Matt built a rally car and it still has the standard brakes, last rally they worked perfect never failed at all. I run really large diameter tyres and it still stops on a dime with out brake fade. I think keeping the engine cool will be a challange that's what kills our engines all the time.
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1995 - SVX 700,000 K Mine, DMS Struts to lift car 2in. Tyres Wrangler Silent Armor 235/70R16, PBR Radiator. 6 speed with DCCD and R180 rer diff, Heavy duty top strut mounts front and rear. Speedo correction box fitted. New stero (gave up on the old one). Back seat removed and 2 spare tyres fitted for desert driving. ECUTune SC sitting in the box for the next SVX. 1992 - SVX 255 K Wife (Want to stay Married so not allowed to fit SC) 1992 - SVX Pearl with black roof race car roll cauge etc ready to race. Ex Tasman Targa car. 1995 - SVX Green low k mint condiation. 1995 - SVX Rally car, ex Matts car. Now to be used on track. 1992 - SVX red & Black being converted to Mid Engine. 1995 - SVX Red 143,000 bit rough. Owned 5 others Subaru back to a 1974 1400 GSR. |
#18
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I don't disagree at all Desertrunner. The factory calipers are great units. The weak spot in our brake systems is the factory rotors. Better rotors & racing brake pads will go a LONG way. Sustaining 140+ will stress EVERY mechanical part of the car.
Running at 140+ then topping a hill will show up just how light the car is getting. At the VERY least giving the car a small rake will help greatly. For what the baseboard moulding costs, it's cheap insurance against turning turtle over a rise. Add in that it's black & will go unnoticed by the "casual observer" & it's a raving bargain! I keep coming back to the 140MPH AVERAGE speed statement. That means at V-max he'll likeley be travelling at 160+
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[SIGPIC]http://www.subaru-svx.net/forum/image.php?type=sigpic&userid=5569&dateline=1207440 507[/SIGPIC] Naught but by the grace of God "42" Current Stable By Age:'89 Subaru XT6 Silver "Audrey" as in Hepburn '96 SVX LSi #767Brilliant Red "Lil Red" Now on the front burner. Looking for a totalled, but running parts car. |
#19
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I agree with your point crazyhorse. What I forgot to put in the last thread that the rally car weighted in at 1,350 kg so with a bit of engine mod's you can match or beat the WRX's on power to weight. Like Trevor says we need to know the rules
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1995 - SVX 700,000 K Mine, DMS Struts to lift car 2in. Tyres Wrangler Silent Armor 235/70R16, PBR Radiator. 6 speed with DCCD and R180 rer diff, Heavy duty top strut mounts front and rear. Speedo correction box fitted. New stero (gave up on the old one). Back seat removed and 2 spare tyres fitted for desert driving. ECUTune SC sitting in the box for the next SVX. 1992 - SVX 255 K Wife (Want to stay Married so not allowed to fit SC) 1992 - SVX Pearl with black roof race car roll cauge etc ready to race. Ex Tasman Targa car. 1995 - SVX Green low k mint condiation. 1995 - SVX Rally car, ex Matts car. Now to be used on track. 1992 - SVX red & Black being converted to Mid Engine. 1995 - SVX Red 143,000 bit rough. Owned 5 others Subaru back to a 1974 1400 GSR. |
#20
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#21
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So if you gents took the time to read all the detail provided, you wouldn't have to keep asking about them. My 140 average comment was made thinking we were discussing 50 or 70 miles of ruler straight Nevada highway. Having read the course notes, I don't now believe a non-modified SVX could easily achieve this, though a well modified one could. A target of 115 or 120 is more realistic. This is a moot point for beginners anyway, as the regulations restrict beginners to the lower classes for a start. I would LOVE to be doing what you are setting up to do. This course is perfect for what the SVX is good at, high speed in comfort. Joe
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Black Betty [Bam a Lam!] '93 UK spec, still languishing Betty Jersey Girl Silver '92 UK [Channel Isles] 40K Jersey Girl @ Mersea Candy Purple Honda Blackbird Plum Dangerous White X2 RVR Mitsubishi 1800GDI. Vantastic 40,000 miles Jersey Girl |
#22
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I'm looking at competing solely in the 120 mph class, which will allow me a top (technical) speed of 140 mph. I'd rather build this thing to run the Gumball Rally, then subject it to a nice warm up run, rather than build it for a warm up run, and have it fail. I love all the great suggestions, and we're talking about it most every night now...plotting and planning. This weekend we're going to try to get the gremlins laid to rest, and fix the electrical grounding issue. I've isolated it to under the dash, I think...
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'92 SVX LS-L Project Car for Open Road Racing |
#23
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What electrical grounding issue, describe, first place to look is behind the stereo.
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1995 - SVX 700,000 K Mine, DMS Struts to lift car 2in. Tyres Wrangler Silent Armor 235/70R16, PBR Radiator. 6 speed with DCCD and R180 rer diff, Heavy duty top strut mounts front and rear. Speedo correction box fitted. New stero (gave up on the old one). Back seat removed and 2 spare tyres fitted for desert driving. ECUTune SC sitting in the box for the next SVX. 1992 - SVX 255 K Wife (Want to stay Married so not allowed to fit SC) 1992 - SVX Pearl with black roof race car roll cauge etc ready to race. Ex Tasman Targa car. 1995 - SVX Green low k mint condiation. 1995 - SVX Rally car, ex Matts car. Now to be used on track. 1992 - SVX red & Black being converted to Mid Engine. 1995 - SVX Red 143,000 bit rough. Owned 5 others Subaru back to a 1974 1400 GSR. |
#24
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It's a serious enough grounding issue that it blows 100A main fuses on contact. I know that I jumped that with a solid core wire for a second, and the lights come to life, but nothing, and I mean NOTHING else electrical works. There was a wisp of smoke and smell of burning insulation supposedly...and it came from under the dash near the kickpanel, so far as I was told.
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'92 SVX LS-L Project Car for Open Road Racing |
#25
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was it the kick panel were the test plugs are? Has some one put in a after market alarm?
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1995 - SVX 700,000 K Mine, DMS Struts to lift car 2in. Tyres Wrangler Silent Armor 235/70R16, PBR Radiator. 6 speed with DCCD and R180 rer diff, Heavy duty top strut mounts front and rear. Speedo correction box fitted. New stero (gave up on the old one). Back seat removed and 2 spare tyres fitted for desert driving. ECUTune SC sitting in the box for the next SVX. 1992 - SVX 255 K Wife (Want to stay Married so not allowed to fit SC) 1992 - SVX Pearl with black roof race car roll cauge etc ready to race. Ex Tasman Targa car. 1995 - SVX Green low k mint condiation. 1995 - SVX Rally car, ex Matts car. Now to be used on track. 1992 - SVX red & Black being converted to Mid Engine. 1995 - SVX Red 143,000 bit rough. Owned 5 others Subaru back to a 1974 1400 GSR. |
#26
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Trevor, New Zealand. As a child, on cold mornings I gladly stood in cowpats to warm my bare feet, but I detest bull$hit! |
#27
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You know more than your questions indicate, and Roo is not telling you what you would like to know, maybe because your questions are non specific. You could possibly have deduced from what he said that they will be in beginners class of one kind or another, but I expect you want Roo to "spell it out". A friend I used to work with at one stage used to do these "timed average" rallies over here. I remember him telling me how seriously fast you had to travel even to get a 60 mph average. Of course Irish twisting boreens are not quite the same as Nevada highways. I'd really love to be able to do a stint on one of those US routes, it looks like my idea of fun.
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Black Betty [Bam a Lam!] '93 UK spec, still languishing Betty Jersey Girl Silver '92 UK [Channel Isles] 40K Jersey Girl @ Mersea Candy Purple Honda Blackbird Plum Dangerous White X2 RVR Mitsubishi 1800GDI. Vantastic 40,000 miles Jersey Girl |
#28
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Hope that helps to clear it up - things looked like they might start to get slightly heated in here! Quick question for Roo's wife... DSM coil overs? I'm not familar with those - linky? Or is it perhaps a different nomenclature than I am familiar with for a popular coil-over option on the SVX?
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-Craig 94 LSi 5spd Barcelona Red, 14Xk miles. Full custom exhaust (Stebro cat-back, custom rest of the way forward) 8000K HID kit from Tom (SVXfiles), Energy Suspension front sway bar bushings, Non-Droopy visors, Race Concepts C/D + Dimpled Rotors, Axxis Ultimate pads,SS brake lines, Bontrager Works #009 (or something like that), stripped interior. (up next) Full cage, fuel cell, 327 swap |
#29
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It sounds to me like pleiad7 and roo are on track (is that a pun in this instance?).
It'll be nice to see a svx restored to competitive glory. I think the engine build and transmisison you have in mind aught to do the trick for power. I'll have some na dyno information for the cams soon as I'm in the process of assembling my engine and it will be going in na to start (although it is low compression and will go fi after break in). From what I've heard from Jeff (someone running the full cam set up na) they perform as was expected, increasing not only the top of the rev range but the whole power band. I would add the following suggestions suggestion #1: new engine wiring harnesses and electronics. Harnesses tend to be brittle at the worst possible places. It's best just to get new ones. New nock sensors and coils are a necessity. The other electronics will just save you chasing down failures over the course of ownership of your new engine. suggestion #2: thermal barier coating of piston tops, combustion chambers, valves, and exhaust ports. This is nice because it increases efficiency accross the board but it is also particularly nice when you are running an engine hard like you will be in these events. You want to keep the heat in your combustion chambers making power and then send it out the exhaust not through your coolant. Suggestion #3: I think you should run your engine a little cooler than factory. You won't actually need to do anything to accomplish this. At the time you'll be purchasing engine management software I'll have a lot of new variations out replacing stage 2 and many of them will kick the fans on at 180ish instead of 200f. |
#30
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You gotta be kidding Craig. Didn't you read the smilies? This is just banter between friends.
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Black Betty [Bam a Lam!] '93 UK spec, still languishing Betty Jersey Girl Silver '92 UK [Channel Isles] 40K Jersey Girl @ Mersea Candy Purple Honda Blackbird Plum Dangerous White X2 RVR Mitsubishi 1800GDI. Vantastic 40,000 miles Jersey Girl |
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