mr2-digest Monday, 9 September 1996 Volume 01 : Number 397 MR2 Tire problems. Re: MR2 Transmission losses Re: MR2 Greddy intercooler for Geoff and all interested MK1: 6'7" tall people CAN drive an MR2!!! MR2 6'7"??!?!? MR2 Re: mr2-digest V1 #391 about LSD in 1992 Re: MK1: 6'7" tall people CAN drive an MR2!!! MR2 Air Bag Light MR2 '91T Tranny Oil Spec. MR2 Re: 163 Hp 4AGZE Re: MR2 6'7"??!?!? [none] MR2 Blow Off Valves MR2 Re: Transmission Losses MR2 Re: MR2 (aw11) prices.... MR2 Re: mr2-digest V1 #396 ---------------------------------------------------------------------- From: Brad Franklin Date: Sat, 17 Feb 1996 17:02:51 -0800 Subject: MR2 Tire problems. Ok I had to do it. My car's inspection had expired, my rear AVSi's were slick, so I had to order A509's for the rear because of the AVSi's national backorder. I had AVSi's on all fours, and my rears wore slick, my fronts are still at about 1/2 tread. Now that I have the Yoko A509's on the back, the car handles VERY much worse! When driving straight down the road, the setup is fine, perhaps even smoother as the sidewalls on the rear 509's are a bit softer. But I think this softness in the sidewalls compared to the AVSi's is a BAAD thing in cornering. The AVSi's seem to 'set' into a corner very quickly. The 509's don't 'set' as firmly, and give more. This extra give makes the rear drift way out, while the front hangs and turns in. It feels like my front is locked on rails, but my back is sliding on jello. Way too much oversteer, and can be VERY dangerous. I would NOT recommend mixing with the AVSi's no matter what...my mistake. Anybody want an 'almost new' set of 509's?? :) - -- _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ _/ Bradley S. Franklin _/ _/ WESTVACO Systems Development _/ _/ Telephone: 540.969.5735 _/ _/ E-mail: bfranklin@yvv.com _/ _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ _/ www.mindspring.com/~jcsmith/bfranklin _/ _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ "Officer, I know I was going faster than 55MPH, but I wasn't going to be on the road an hour." - -- Steven Wright ------------------------------ From: Dan Barnes Date: Sun, 8 Sep 1996 14:19:19 -0700 (PDT) Subject: Re: MR2 Transmission losses On Sat, 17 Feb 1996, Brad Franklin wrote: > Say you have an engine that has a PEAK hp of 200 at the crank, 160 at > the rear wheels. That 40 hp is being lost in the transmission at the > PEAK output of the engine. I have no experience in this, but has anyone > acutally compared the curves of an engine dynoed at the crank and at the > wheels? I have never seen this done. My problem with the 20% rule originally came about because it was used to go from hp at the wheels to a projected flywheel value that seemed wrong. Thinking about it, that seems to be how it is always used. You almost never see an engine buildup in which they say, "We built a 350 hp engine - and when you stick it in your car, you'll only see 280." It's always, "We got XXX hp at the wheels, so the engine must be putting out XXX * 1.25 hp!" I would like to see a comparison between flywheel output and road wheel output. > I would say that the % difference between the peak hp and the hp > at a lower rpm on a chassis dyno would be less than the % difference > between the peak hp and a hp at a lower rpm on a "crank" dyno. I would > say that the drag effect at low drivetrain speeds would be MUCH less > than the drag effect at higher speed. So it is variable, and not really > related much to the engine's output. It may relate some, as I'm sure > load on the transmission DOES affect its efficiency some, but not to a > significant degree (unless something breaks). This makes sense. I believe that a large portion of the losses come from stirring the lube, and because it's a liquid, these losses should rise roughly in proportion to the square of the speed. Dan Barnes dabarnes@osiris.ac.hmc.edu Under the Smog MISTRS2 http://www2.hmc.edu/~dabarnes/carguy.html These are just opinions, and only my opinions. They may be wrong, so don't act on them in a way that could cost you lots of money without getting several others first. They aren't the opinions of my school or my employer. ------------------------------ From: bagdon@rust.net (S and K Bagdon) Date: Sun, 8 Sep 1996 18:09:58 -0400 Subject: Re: MR2 Greddy intercooler for Geoff and all interested >This was the part that pissed ME off. They obviously designed the tubes on a >car that did not have the stock strut bars on it. I was able to position the >tubes enough so that they don't touch the cross-bar now, but it was a pain. > >> After removing the intercooler I filled it all the way up with >> trichloroethane and boy mucho chips came up. Did this 5 times and then two > ^^^ >What is this stuff Kostas? (Damn it Jim, I'm a programmer, not a chemist :) > >Geoff >'91t, 183,000km Sounds like 3 parts chlorine and 1 part ethanol. :-) Defintely a liguid? Whatever it is, with 3 parts chlorine I sure wouldn't want to breath the fumes! Steve B. bagdon@rust.net (h) USFMDDKT@ibmmail.com (w) http://www.rust.net/~bagdon Katharine aNd Steve (KNS) '91 MR2T (daily driver), '85 MR2 (parts car) ------------------------------ From: Paul Strong Date: Sun, 8 Sep 1996 23:21:20 +0100 Subject: MK1: 6'7" tall people CAN drive an MR2!!! About six weeks ago I posted a request asking if anyone in the UK would like to try out a small steering wheel on their MR2. Unfortunately there were no takers. A few weeks ago a nearby Toyota dealership said they had a Mark 1 T-Bar for sale, onto which they'd fit (at the normal hourly rate) a 12.5" (320mm) steering wheel I bought specially, and let me find out if at 6'7" (2.00m) tall I should give up my dream of getting an MR2; or not! Last Friday they got round to fitting my wheel and I'm very glad to report that I fitted! I was amazed that I could even operate the parking brake (I didn't think it would get past my knee, but the smaller wheel meant that my leg didn't stick over the high tunnel). So now I'm on the look out for a good clean MR2. Any buying advice is appreciated. BTW, I'm going to be looking for a sunroof only MR2 because I don't like the sun much and in the T-Bar my head kept hitting the edge where the panel recess is in the roof, while in the sunroof version my short hair just brushes against the roof when I move. Thanks to everybody who replied to previous requests for help! You've all been great! Paul. strong@globalnet.co.uk ------------------------------ From: Brad Franklin Date: Sat, 17 Feb 1996 18:56:28 -0800 Subject: MR2 6'7"??!?!? > A few weeks ago a nearby Toyota dealership said they had a Mark 1 T-Bar for > sale, onto which they'd fit (at the normal hourly rate) a 12.5" (320mm) > steering wheel I bought specially, and let me find out if at 6'7" (2.00m) > tall I should give up my dream of getting an MR2; or not! Wow, a 6'7" person in a MKI! Thats impressive. I'm glad you didn't have your heart set on a 1st generation RX-7. My girlfriend has one and my head touches the ceiling, and I'm only 6'2". Actually it's kinda cool...you know how you have "oh-shit" handles and those spots on the floor where you can push and secure yourself in your seat when taking really high-g turns? Well I can just firmly push my noggin against the roof and it keeps me firmly planted when I'm out racing around in my girlfriend's car (hehe....no really!!). Have you thought about a MKII? You might be able to fit a little better in one of those. :) - -- _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ _/ Bradley S. Franklin _/ _/ WESTVACO Systems Development _/ _/ Telephone: 540.969.5735 _/ _/ E-mail: bfranklin@yvv.com _/ _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ _/ www.mindspring.com/~jcsmith/bfranklin _/ _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ "Officer, I know I was going faster than 55MPH, but I wasn't going to be on the road an hour." - -- Steven Wright ------------------------------ From: JASL3@aol.com Date: Sun, 8 Sep 1996 19:20:49 -0400 Subject: MR2 Re: mr2-digest V1 #391 about LSD in 1992 LSD WAS FIRST MANUFACTURED IN FEBRUARY 1992. CHECK YOUR AXLE/TRANS CODE AND BUILD DATE ON THE SAME INFO PLATE WHERE YOUR DRIVER'S DOOR CLOSES. IF YOU HAVE AN E153 BUILT AFTER FEB 1992 THERE IS ABOUT A 99% CHANCE IT IS THE LSD TYPE. ------------------------------ From: "William L. Brandt" Date: Sun, 08 Sep 1996 13:43:52 -0700 Subject: Re: MK1: 6'7" tall people CAN drive an MR2!!! Paul - are you aware that the Mk 1 had a small steering wheel adjustment? It's a little lever on the left side of the steering column you drop the lever and the wheel will travel about 2 inches up & down. It's not much, but many people who have owned these are not even aware of it. BTW, I had Pennzoil synthetic 10-30 in for 1000 miles. I've been so worried about the effects of our terrible heat (it's 100 today) I'm going to drain it tonight & put in Mobil 1 15-50! Hos that for neurotic behavior? I'll but in the Mobil 1 gear lube in a few weeks (in the transmission). Bill At 11:21 PM 9/8/96 +0100, you wrote: >About six weeks ago I posted a request asking if anyone in the UK would like >to try out a small steering wheel on their MR2. Unfortunately there were no >takers. > >A few weeks ago a nearby Toyota dealership said they had a Mark 1 T-Bar for >sale, onto which they'd fit (at the normal hourly rate) a 12.5" (320mm) >steering wheel I bought specially, and let me find out if at 6'7" (2.00m) >tall I should give up my dream of getting an MR2; or not! > >Last Friday they got round to fitting my wheel and I'm very glad to report >that I fitted! I was amazed that I could even operate the parking brake (I >didn't think it would get past my knee, but the smaller wheel meant that my >leg didn't stick over the high tunnel). > >So now I'm on the look out for a good clean MR2. Any buying advice is >appreciated. BTW, I'm going to be looking for a sunroof only MR2 because I >don't like the sun much and in the T-Bar my head kept hitting the edge where >the panel recess is in the roof, while in the sunroof version my short hair >just brushes against the roof when I move. > >Thanks to everybody who replied to previous requests for help! You've all >been great! > >Paul. > >strong@globalnet.co.uk > > William L. Brandt wlb@calweb.com Sacramento, CA ------------------------------ From: "Burns, James B." Date: Fri, 24 May 96 20:28:00 EDT Subject: MR2 Air Bag Light The '91T race car I bought had the air bag disconnected since this is a requirement for wheel to wheel racing. I disconnected the battery for 1/2 hour, then reconnected the connector under the steering wheel center pad, but after reconnecting battery the Air Bag light stays on (with the ignition turned on). The strange thing is that the seat belt light goes out whether the seat belt is connected or not, but either way the Air Bag light stays on. The starter, lights, etc. seem strong so I don't think the system voltage is low. Any clues as to what is wrong? Brad Burns BurnsJB1@central.ssd.jhuapl.edu ------------------------------ From: "Burns, James B." Date: Fri, 24 May 96 20:21:00 EDT Subject: MR2 '91T Tranny Oil Spec. What is the recommended viscosity for the transaxle oil for a '91T? For my '94T, the shop manual and owners manual say 75W-90, but for the the '91T the owners manual says nothing and the shop manual says something like "use MT-50 or equivalent". What is that? I seem to remember that the recommended viscosity for the '91 was different than for the '94. Oh, and for the '91T, the manual doesn't even list tranny lube replacement as a maintenance item. Is the original stuff supposed to last forever? FWIW, I use RedLine 75W-90NS in my '94T w/LSD. I'm wondering what RedLine product to use in the '91T. MTL? MT-90? 75W90NS? Brad Burns BurnsJB1@central.ssd.jhuapl.edu ------------------------------ From: kazu@net.nagasaki-u.ac.jp (Kazuhisa Nishishita) Date: Mon, 9 Sep 1996 08:57:39 +0900 Subject: MR2 Re: 163 Hp 4AGZE >> This version of the 4AGZE was used on the supercharged Levin. Reason >> for the higher horsepower levels are: >> >> There is no Airflow meter, less intake restriction. >> The intake ports a substantially smaller, offering increased air >> velocity and torque. >> Japanese ECUs are programmed with a more aggressive timing curve, since >> fuel in Japan is higher octane. >> >> Gerald San Agustin >> Cyber Racing, So Cal. > >Also, the compression ratio is higher (8.9 vs 8.0), and it has the >wasted spark 2-coil ignition (no dizzy). These Nippondenso coils are >apparently as good as one is ever going to need - seen them on a >3S-GTE dragster running mid 7's. > >- -- >Matti Kalalahti | Toyota Carina Coupe GT-T TwinCam Turbo '82 >k124476@ee.tut.fi | RWD * IRS * LSD * 3T-GTEU * 232hp and moving on up... >A Huge Evergrowing WWW Home Page * http://proffa.cc.tut.fi/~k124476/ And also, it has smaller pully on the s/c. Kazuhisa Nishishita kazu@net.nagasaki-u.ac jp - -- 87Mk1SC ------------------------------ From: Dan Barnes Date: Sun, 8 Sep 1996 17:11:46 -0700 (PDT) Subject: Re: MR2 6'7"??!?!? On Sat, 17 Feb 1996, Brad Franklin wrote: > Wow, a 6'7" person in a MKI! Thats impressive. I'm glad you didn't have > your heart set on a 1st generation RX-7. My girlfriend has one and my > head touches the ceiling, and I'm only 6'2". > _/ Bradley S. Franklin _/ That's weird. I am 6'4", and have even more leg and head room in a 1st-gen RX than in my MR2. Dan Barnes dabarnes@osiris.ac.hmc.edu Under the Smog MISTRS2 http://www2.hmc.edu/~dabarnes/carguy.html These are just opinions, and only my opinions. They may be wrong, so don't act on them in a way that could cost you lots of money without getting several others first. They aren't the opinions of my school or my employer. ------------------------------ From: sguinn45@sprynet.com Date: Sun, 8 Sep 1996 18:07:28 -0700 Subject: [none] Joel - I occasionally use the Unocal 100 Octane stuff available at a few dealers here (in Phoenix). Runs about $3.79/gal. My '92 MRT Loves it. I have the HKS exhaust, VPC, EVC, Air Filter, FCD, & Turbo Timer. Car is just unreal. I have blown off Vette's, Cobras, Z28's, no problem. My Yoko AVSi's only last 6K miles tho. Regards, Steve ------------------------------ From: NitrousOS@aol.com Date: Sun, 8 Sep 1996 22:03:05 -0400 Subject: MR2 Blow Off Valves I want to buy a blow off valve, but one I went looking, I noticed that there are about 1000 of them.. I've seen different brand names, spring tensions, sizes, etc.. I was wondering if someone could help me with them and also tell me which ones are better and which ones just plain suck. The ones that I hear about the most are from Greddy which has 3 different ones, HKS, and RS Akimoto (which has one 3 way adjustable one). Thanks Scott nitrousos@aol.com ------------------------------ From: gseeley@island.net (Geoff Seeley) Date: Sun, 8 Sep 96 21:33:34 Subject: MR2 Re: Transmission Losses Would cooling the transmission fluid recover any of the lost horsepower? I notice that the MkII transmission (E153) includes an external cooling tube loop that is just begging to have an oil cooler attached to it. Would we gain anything by this? Geoff '91t, 183,000km ------------------------------ From: Joel Grospe Date: Sun, 08 Sep 1996 22:27:20 -0700 Subject: MR2 Re: sguinn45@sprynet.com wrote: > > Joel - > I occasionally use the Unocal 100 Octane stuff available at a few dealers here > (in Phoenix). Runs about $3.79/gal. > My '92 MRT Loves it. I have the HKS exhaust, VPC, EVC, Air Filter, FCD, & Turbo > Timer. Car is just unreal. > I have blown off Vette's, Cobras, Z28's, no problem. > My Yoko AVSi's only last 6K miles tho. > Regards, > Steve Wow! ------------------------------ From: Tim Warner Date: Sun, 8 Sep 1996 09:18:19 +0100 Subject: MR2 (aw11) prices.... Hi, I trying to find prices for AW11 models from around the world. Many thanks to Tony for providing the book prices from Japan. Anybody with details of real cars (I'm thinking about importing one to the UK). Please e-mail me direct (see sig below) Yes I know there's adverts @ MR2.com but these are mainly USA cars and ideally I would like a righthand drive model (Japan - NZ and anywhere else ?) Still interested in other countries though.... If anybody's interested, I'll post a summary to the digest in due course. Many thanks.... Tim.... - -- tim@warnerpj.demon.co.uk Tim Warner 85Red & 89Metalic Blue :-) .......... ------------------------------ From: sv1bt@compulink.gr (Kostas G. D. Chryssos ) Date: Mon, 9 Sep 1996 10:22:00 +0300 (EET) Subject: MR2 Re: mr2-digest V1 #396 >After saying all that junk, I would say that your transmission may well >get very HOT if ran at high speed for an extended period of time. Most >of the time, we don't do that though. Plus heat transfer to the air and >other parts of the car must be taken into account. > >As I said before, I think its hard to compare crank and wheel horsepower >values because the wheel horsepower CURVE has a variable drag effect >which depends upon drivetrain speed. > >- -- > _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ > _/ Bradley S. Franklin _/ > _/ WESTVACO Systems Development _/ > _/ Telephone: 540.969.5735 _/ > _/ E-mail: bfranklin@yvv.com _/ > _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ > _/ www.mindspring.com/~jcsmith/bfranklin _/ > _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ I agree with the above. Though it is a fact that the losses are as you said static, they do not get much higher with RPM etc. Also do not forget the losses at the wheels (Tire etc). They also count much as there is no way to measure HP at the wheels without ...using...the tires. Kostas G.D.Chryssos Ph.D. ELFON Ltd. 30 Ikarias str., Glyfada GR 16675 Athens HELLAS Tel: + 301 9628212 Fax: + 301 9628539 e-mail: sv1bt@compulink.gr ------------------------------ End of mr2-digest V1 #397