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Posts posted by Vk304
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8 minutes ago, mjrstar said:
Am I dreaming or do doritos have the water pump run either clockwise or anticlockwise depending on which model.
I'm sure the pulley I machined for rx7 rally car crashing guy ran off the back of the belt, and he asked me to knurl it for extra grip.
Also don't know hahaha, this is how it came to me and I've only had one other rotary car a rx8, but yea im pretty new to rotarys
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On 20/04/2025 at 12:06, mjrstar said:
Are the front camber plates correctly installed? It seems weird that they are right in on the slots and the camber is near zero.
I was wondering if they were 180 degrees out, is the side to side centerline mean that you get a change in castor?
/ castor makes you faster. I added heaps to my racecar and it's great.
I'm not suure, I haven't had much to do with aligning, but that's how the shop put it? I might do some research on that, it needs to be re aligned anyways
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Also got a racetech linelock for drag butnouts etc to not smoke my rear brakes and i prefer mechnical things so no solenoid, it turned out to have bsp threads in it...... ?
So i had to get a bunch of adapters to make that work bsp to npt to brakeline fittings, ran the lines through a gromet hole and to the rear split into a m10x1.0 joiner..
the idea being it's fully removable... because it's not legal, but can remove handle to render it un operable
and got a front bumper to fix my cut up one, as well as a carpet and gear shifter surround and boot, little more tidy inside because street car? Bumper will have to wait till I paint the car someday because it's white... still looking for a reasonably priced dash facia...
rear still needs something, yes my battery box is a sealed ammo box bolted to the floor lol
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It's just as loud with the louvered core resonator, but not too loud? Lol and I did a fd reman altenator, because the 60 amp one was not cutting it at low revs with fan on etc... all I had to buy was a 90 amp fd rx7 altenator, from strange workshop about 300$, a ls plug kit
- (ls, nissan, mazda- share the same style 2pin plug for Mitsubishi / hitachi alt )- from a aeroflow supplier- about 6$ and attach it to my wiring.
Drill my pulley out to 17mm, and space pulley out about 6mm ( i used a thin nut, dilled out to 17mm and the hex ground off- because im a hoarder...and it works).. and now it charges 14 plus volts at idle. Not sure if the old altenator was bad or the demand was too great, but now it doesn't seem to have the same issues- stalling at lights etc...
Other than that they just bolt in to s4 housings...
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Cut open the maxfab resonator which was having a hard time
brought a louvered 3.5inch core from Adrenalin r and repacked it with stainless as well as the glass packing that it did have, should last longer hopefully, also the core is only welded on one side inside so it has some room to expand with heat.
Hopefully it's a bit better now and i won't be worried it's gonna collapse and damage stuff. Adrenalin r stuff is pricy, but the quality is definetly there, my rear muffler is also Adrenalin r, non louvered 3 inch now.
sounds nice and takes a lot of the drone out of it .
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Need bigger tyres
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So another fc owner Ashley, who put me on to the rack in auckland, had spare fc parts and I ended up getting a full set of belts for the car, and a panel for under the glove box.... for the cost of shipping, sometimes the car community is just awesome here, this gets me closer to having a back seat, which I wouldn't mind having one day, and the interior looks a bit less stripped ...
rear camber way out, and front caster, both of which are not very adjustable, especially with a lowered car...
Rolled both guards as tyres were already rubbing a bit
Then got some part shop max camber links for the rear, pricy at 360$ or so... I tried buying the shortest heim joints/rod ends with male/female threads and right hole id...to make these but it is not possible to achieve the shorter distance with what the bearing shop was able to provide so I bit the bullet and got psm links...
But this took a lot of camber out. Not sure on the caster because it's not that far out... I will try sort something out for that.
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Ok so went for another cert, because mine was from 2011 and was missing a bunch of details, whether it was different rules or things were changed- I dont know, but I have a few things to fix, it failed on power steering modified, and a fuel line rubbing, I fixed the fuel line in 5 minutes...
The rack that I modified to be depowered would not pass a cert without professional inspection by a third party and that was going to cost, I checked my parts in storage, and found that I actually had the whole powersteering setup bar the the rack, so I found a unmodified one in auckland at a reasonable price and got that.
To install it I had to weld a line that had the fitting cut off, and make a crank pulley spacer that accommodated the gilmer setup and pump pulley, I made a makeshift one to make it work and provide measurements for a new one to be made by cnc, aand have the recesses and all that cut into it. To provide a true centered pulley.
Beck cnc ltd, reccomended by a friend, made the spacer for me and did a good job of it, it's tight and the belt is straight and true, all I had to do is drill the through holes ...
I had to relocate the blow-off-valve to fit it in there ..
power steering is sorted now and asked the cert man if I needed to do an alignment report and he informed me I did....
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Wow, that's a bit exessive, I diddnt realise this was going to be so involved, guess i'm just going to have to risk it
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Ok so this car runs great and I've given it another oil and filter change, now I'm trying to shut it up...
I half forgot this had a green sticker, for noise ... well turns out the laws were changed since I had one, and now you need to get your exhaust certified, about 400$ and the noise limits and 4500rpm for rotary cars makes it near impossible for a performance rotary.
I brought a small truck muffler and modified it and filled it with packing and it was much quieter, went to cert guy and he did a quick check to say it needs even less sound, that was pretty gutting, so now I've done a much more extreme muffler that should be quiet enough, should be easily used for wofs and the cert, but maybe not long distance or boost because it's too much backpressure.
Swapping out the mufflers can be done in 5min with the v band acessable from wheel well and just swap it out on the floor, so that's easy enough...
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On 31/12/2024 at 19:18, rotormotor said:
Very interested in the 2 step option and how that allsorts out.
I'm hesitant to use that, the final tune I could do it off the handbrake switch through a relay, but it's not great for the engine and will probably break stuff if it's used at full power, I think ill add it just to have the option but will see. . .
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https://youtube.com/shorts/6hPaDBotFME?si=jZJwlUqwGYtoHxpv
https://youtu.be/4D4KsOw_sYE?si=HhoGcgXo5Ia-5hLV
Also,. Dont use aramex for overseas shipping, took a month to deliver a package
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Ok so that took longer than expected, had some issues, some my fault, but we got there at the end, Gavin really did help troubleshoot the issues, I highly reccomend him as a tuner, the problems were hard to pin down, but now the car is running a lt10c microtech ecu. It has fuel, oil and boost pressure safety limits set up, and cold running limits, I have guages for these but if something happens quickly the ecu will protect the engine.
Also new coils, leads, and I completely re wired the loom to improve on the old setup, and new injector plugs because the old ones were corroded and in poor condition, the new x4 box that came with the ecu somehow was faulty and that got replaced with the old x4 box.
Everything runs great now and a run in tune, making about 385hp at 12psi boost and low rev limit, i believe 7.5k rpm, plenty more to be had but it's really not necessary for now.
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Haha diddnt realise you were there, i turned up later and stayed to try and sort out some bits, yea i can do something about that, i asked him to setup 2step as well lol ill tidy the whole thing up when its running good, yea relay was my bad, good guy ay
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Well i bit the bullet after no luck in getting my old ecu checked, i kind of liked the idea of having some upgrades at the same time and brought a microtech lt10c, with optional fuel and oil pressure sensors to be tuned in for safety and a new ignition box..
some adaptors from aeroflow to adapt the sensors into the system, and i get to keep my oil pressure and temperature gauges for keeping an eye on things easily .
moving away from gull force 10 ethanol it used to be tuned to, because its no longer available, so going to run bp98 and motul 800 premix .
i ended up wiring the sensors in myself because it was easy enough, and all went well there, still a bit rough and ready but once everything is confirmed to work right ill re install and tidy things up. Ready for tuning soon...
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Vk304's 87 Mazda rx7 series 4 bridgeport
in Projects and Build Ups
Posted
Found rear seat and carpet etc
Went to jaycar and got a shift light, and a momentary button for launch control, so when it gets final tune that will be an option, drilled through the gear shift but doesn't interfere in the thread or how you put it on.. you do have to press it in fairly hard so wont hit it on accident shifting gears etc, both go through relays and fuses, i may change it to steering wheel maybe will see how it works.
