peejay

Jet-powered draggers are quicker than any TF car, especially on a crappy track

RX7GT

Well anyway it is now Wedneday night (actually Thurs morning) and I went back out to the 1/4 mile again tonight to try a few things. The good news is that I got my boost back and I also got my reaction time down to the .5xx range consistently. As for the bad news: My best run of the three passes was a 15.92 (only 3/100 of a second faster than last Friday's fastest run). I also replaced the fuel filter today just because it has been about 30k since it was last changed. I hoped that was going to cause a noticeable improvement (I was dreaming, of course!)but it didn't happen that way. I am going to tear into the throttle body tomorrow and clean everything inside. I'm sure that hasn't been done in a LLLLLLLLONG TIME (if ever). I know it won't hurt anyway. My next thing will be replacing the plug wires just because they are old and look nearly original. Again, I know it can't hurt but I doubt if it will make me faster. Plus it is maintenance I have needed to perform for a while now. I think I'll also change the oil while I have the beast in the air. I was thinking more about the post above about lowering IC temps and have been working on a few ideas. I'll let you know how they work (or even IF they work!). I was also thinking of getting another T2 hood just for racing so I can cut a smaller scoop on the RF corner just above the airbox and make some kind of cold air intake (I'd settle for luke-warm air at this point). I was just looking for ideas on how to get more air inside and noticed the little plastic deflectors in front of the breather tube right by the hood latch . They appear to be very restrictive due to not only having small holes but also being inside the engine compartment. With the underhood temps already on the HOT side, it makes the IC work just that much harder. I'm sure there are many kits for sale out there but I want to try to build my own setup if possible. I have been looking at K&N's too. I'll post an update when it happens! ---Jeremy

Anderson

As was stated before, that .5xx R/T is only good news if you were in a competition. Other than that, it means nothign and has nothing to do with your ET. What you need to focus on is your 0 to 60' times. I strongly suggest you do that before you spend countless hours in your engine bay.

Dotn worry about your R/T worry about your traction.

RX7GT

The car is pretty much completely stock. Stock 13B, stock turbo, even stock wheels. The engine and turbo are kinda new however. I have about 25k on the engine and 12k on the turbo. So far, the only thing I have modified to improve driveability is remove the cats to clear the exhaust. As for the boost: I dunno what I did. I got into her Monday afternoon and just started tightening hoses and clamps and pushing vacuum lines further onto the metal fittings. I must have done something right cause it is back up to around 7 lbs.
I know that RT really has nothing to do with getting faster, but I just like getting the great start everytime. It is more of a bragging thing than a performance issue. So far, I have been launching the car about as well as it will go. I have tried dropping the clutch from 5000 R's, I have tried slipping the clutch from 3500 and everything in between. I even dropped the clutch from WOT once to see if I could get a better 60' time. NOTHING!! I am still pulling 2.5 seconds to the 60'. I barely broke traction on the WOT launch. The car hooks up beautifully! There is only a slight chirp if I drop the clutch.
As for the underhood stuff, I just really need to do some maintenance on her. I know that it will not improve the 1/4 mile times much, if at all, but it still needs to be done. I tend to be very **** about most maintenance issues. This T2 is also my daily driver. I also think that even if I improve my 60' time, i still won't be at the mid-14 second range that I want to be in. I guess I'll have to start spending money on expensive **** someday soon to really get her on the fast track. ---Jeremy

Anderson

Damns thats kinda weird cus my GTU got a 2.43 0to 60'with only and intake at that time.

Teh last time I went I got soem SERIOUS wheels hop so I lost soem time (this was after all my mods).

AND Thanx to the Wheels hop my trap speed was even 7 MPH lower, AND I waited in line for 2 hours and 25 minutes JUST TO GET ONE RUN and a crappy 16.4, the same as I did with only the Intake.

I was expectign mid to low 15's
On a good note, I beat the car that was next to me How sad can that be
I havent gone back since.

gsracer

I really don't think there is anything too seriously wrong with your car. 2.5 second 60 foot times are killers! Try dropping it down to a 2.1 or 2.2 and you'll easily be in the low 15's - where a 15 year old basically stock t2 should be. As for getting mid 14's, a bunch of people have ran taht and better with just downpipe/midpipe, fcd, and a fuel pump, provided they can get proper traction, so don't be so down :-)

RX7GT

I guess the only things that I had to base a 1/4 mile time on before actually running my car were the magazine tests and the Mazda ad from 1990 which stated a 14.8 1/4 with a 6.3 0-60mph time. I should know not to believe everything I read but I expected to be a little closer to those #'s. I could also understand if I had a 12 year old engine and/or turbo but they are relatively new.
I did pull the IC off today and cleaned the throttle body and the intake air hoses. I definitely want to get some kind of intake mods as a next step. My exhaust is already pretty much free-flow. I know the chambers are still there disrupting the smooth flow but it should run better without the cats being in the way. After I cleared the cats, I was hitting the fuel cut quite often. I guess I just kinda assumed that it would be a little faster. Maybe not! I'll try again next week. I'll also have to practice those launches to get my 60' times down. It just gets so DAMNED discouraging with a really great looking, bright red, rotary powered, turbo-boosted, world-class sports car which only turns a high 15 second run. I am almost convinced that I'll find something wrong with her. I know it is going to be something stupid too. (like bad driving)

Angel Guard Racing Team

If you got no boost, you will run slower than n/a's. Remember that it is a low compression engine. If you say that the boost did not go up something is either broken or not working properly. Check the blow off valve, also try removing the hose from the compressor to the wastegate. Go for a moderate spin around the block, hit the gas and check for boost. DO NOT HIT THE PEDAL TO THE METAL, if the turbo is working ok it will boost like a mother ******. If you see that after this boost goes up check the blow off valve and the wastegate.

RX7GT

I haven't had a lot of time to play with her recently due to the fact that I have been working more hours than usual. I have not been back to the track in a few weeks but I have been driving longer distances on weekends, etc and trying to feel the car out more. The boost is very off-and-on at this point and I just need to take her off the road for a week and tear into her to find the problem. I'm sure the BOV or the wastegate is stuck or something. I also started running 100:1 premix last week and will hopefully have less wear and tear on the engine in the future. This becomes a PIA at fuel stops but I remind myself how much a new 13BT costs and it seems worth the extra effort.
I have also noticed a slight bit of clutch slip recently which I am sure does not help my launches. I guess I'll have to replace it soon just to keep it in top working order.
The good part is that I now have a new shop with a lift so now I can get under the car much easier and change fluids easier too. I forgot how much I loved having access to a lift. It also gives me more motivation to work on the car more. I'll keep ya posted on how she's comin along.
Thanks everybody for all your advice!! ---Jeremy

TurboHead

I dont know JACK about racing, BUT what you said there RX7GT certainly DID make me break out in a frenzy of hysterical laughter! OH, I am talking about you "infomercial" thing!! DAMN that was FUNNY! thanks man, you have NO idea how much I needed that!!