Miata Turbo Forum - Boost cars, acquire cats. - Search Results

 
Search: Posts Made By: Madjak
Showing results 1 to 25 of 500
Search took 0.02 seconds.
Forum: Race Prep
06-24-2019, 09:58 AM
Replies: 75
Views: 21,053
Posted By Madjak

I've had no issues with my little Suzuki one. I...

I've had no issues with my little Suzuki one. I had lots of issues with the Oem alternator especially at high revs. Plus there is a lot less mass to spin up.
06-21-2019, 11:31 PM
Replies: 1,046
Views: 156,269
Posted By Madjak

I'm not sure how they would work on the street....

I'm not sure how they would work on the street. Pad life would be way less than a street pad surely.

For the Oem rear I had the pad width ground down by the brake guys. It was on $20 or something....
06-21-2019, 04:26 AM
Replies: 1,046
Views: 156,269
Posted By Madjak

Yup they are only 12.5mm but they last ages so it...

Yup they are only 12.5mm but they last ages so it doesn't really matter. DS UNO is probably the better compound but I don't think it comes in either the FRP3148 or the FRP502 shapes. I run the DS1.11...
06-20-2019, 01:58 AM
Replies: 1,046
Views: 156,269
Posted By Madjak

I just fitted some Ferodo pads which are FRP502....

I just fitted some Ferodo pads which are FRP502. They are a similar shape to the PFC 7754 pads and required a little bit of trimming with a cut off disk so that the backing plates didn't interfere...
05-06-2019, 12:08 AM
Replies: 53
Views: 5,459
Posted By Madjak

Actually the general fix for a highly developed A...

Actually the general fix for a highly developed A series engine is to weld two massive breather pipes (3/4") into the valve cover, reroute the output from the block to one and vent the other uphill...
Forum: Aerodynamics
03-07-2019, 09:32 PM
Replies: 4
Views: 2,057
Posted By Madjak

I like the flat plates on the the lower...

I like the flat plates on the the lower suspension arms. Something easy to apply to a miata to help drive cleaner air to the rear diffuser.
01-29-2019, 10:26 AM
Replies: 47
Views: 26,411
Posted By Madjak

After four years of running this manifold I...

After four years of running this manifold I figured whilst I had it off my car I may as well smooth out the casting marks and bell mouths. I'm modifying the throttle bracket to make a throttle...
Forum: Aerodynamics
01-25-2019, 12:29 AM
Replies: 30
Views: 4,416
Posted By Madjak

I made my own ride height sensors with a $5...

I made my own ride height sensors with a $5 potentiometer and a 3D printer. They work well if you have something that can log 2 x 5v analog channels. The resolution is probably enough to gauge...
01-22-2019, 09:02 PM
Replies: 103
Views: 30,444
Posted By Madjak

yeah, I'll just have to see how it works in car....

yeah, I'll just have to see how it works in car. This design relies on the throttle spring pulling it closed as soon as the pneumatics are turned off which should keep tension on the cable the whole...
01-22-2019, 08:27 PM
Replies: 103
Views: 30,444
Posted By Madjak

https://cimg5.ibsrv.net/gimg/www.miataturbo.net-vb...

https://cimg5.ibsrv.net/gimg/www.miataturbo.net-vbulletin/2000x1504/20190122_222632_ba593b414756260272f0e066c8e9ce09db8f0cef.jpg

I've been thinking about throttle blips on downshifts and came up...
Forum: Race Prep
12-21-2018, 03:45 AM
Replies: 260
Views: 38,158
Posted By Madjak

I'm pretty sure all of the Nissan valve locks /...

I'm pretty sure all of the Nissan valve locks / retainers are the same taper angle as Mazdas so as long as you run the corresponding locks they will fit in the BP retainers. They can sit a bit higher...
Forum: Race Prep
12-21-2018, 01:28 AM
Replies: 260
Views: 38,158
Posted By Madjak

I also debunk the idea that higher valve spring...

I also debunk the idea that higher valve spring pressure loses power. If you turn my cams you'll get massive resistance as one of the lifters runs up a lobe but then all that energy gets returned on...
Forum: Race Prep
12-20-2018, 02:20 AM
Replies: 23
Views: 4,778
Posted By Madjak

Dann, cheers for the compliments... I figure it's...

Dann, cheers for the compliments... I figure it's such a simple DIY mod that releasing the CAD might help save someone the grief and $$$ of a spun bearing.

I run an oil pressure sensor directly...
Forum: Race Prep
12-19-2018, 11:06 PM
Replies: 23
Views: 4,778
Posted By Madjak

Over the past few years I have supplied this CAD...

Over the past few years I have supplied this CAD profile to around 40 people, so I figure I may was well post a link to the actual file so I don't get so many PMs.

here is the link if anyone...
Forum: Race Prep
12-14-2018, 06:30 PM
Replies: 34
Views: 3,903
Posted By Madjak

I've been toying with a dry sump design that...

I've been toying with a dry sump design that would be easy to make. Basically I'd make it in two parts, the first being a 60mm thick spacer plate / crank girdle that rings the sump and also bolts to...
12-11-2018, 10:18 AM
Replies: 103
Views: 30,444
Posted By Madjak

You _might_ be able to get pneumatics to work on...

You _might_ be able to get pneumatics to work on a synchro box by running lower air pressure or some sort of spring mechanism in the linkages that applies a softer constant force.

My setup uses 2...
12-11-2018, 12:31 AM
Replies: 103
Views: 30,444
Posted By Madjak

My system uses magnetic sensors on the cylinders...

My system uses magnetic sensors on the cylinders to test if they achieved a successful shift. They are also used to display to the LED gear indicator. Once successfully in gear, the pneumatic valves...
12-05-2018, 09:21 PM
Replies: 3
Views: 450
Posted By Madjak

The GoPro Fusion is alright but their software is...

The GoPro Fusion is alright but their software is pretty restricted. They also aren't very cheap, but the quality of the footage os good. I have it hooked up to the RaceCapture so it gets triggered...
12-05-2018, 12:54 AM
Replies: 3
Views: 450
Posted By Madjak

Panoramic Incar Video

Just thought I'd post up the first GoPro Fusion footage from inside my car. It's probably best if you load it up in the youtube app on a mobile phone as you can use the device to look around.
...
11-30-2018, 12:40 AM
Replies: 5
Views: 1,026
Posted By Madjak

The throttle body is 70mm so I'll run a 2.75"...

The throttle body is 70mm so I'll run a 2.75" tube out of the top. The Rotrex exit is 51mm ID so I'll probably step that out to 2.25", make a 90 degree turn and across to the intercooler.

Head...
11-29-2018, 04:39 AM
Replies: 5
Views: 1,026
Posted By Madjak

Dann, I can't go and buy something off the...

Dann, I can't go and buy something off the shelf... that just isn't my style! Knowing me I'll do something crazy like billet end tanks or something.
11-29-2018, 01:00 AM
Replies: 5
Views: 1,026
Posted By Madjak

Intercooler sizing

I'm starting to source things for my Rotrex build and one of my biggest unknowns is the intercooler. Target wHP is around the 400-450 range running a c38-81 on my current N/A engine with slightly...
11-28-2018, 05:24 PM
Replies: 8
Views: 782
Posted By Madjak

I'm not sure if reducing the aero drag on a crank...

I'm not sure if reducing the aero drag on a crank actually helps much once you account for the rods and pistons. The mix of air and oil in the crank case would be mashed up into a mess swirling all...
11-28-2018, 09:10 AM
Replies: 8
Views: 782
Posted By Madjak

I balanced my own lightened crank, more to see...

I balanced my own lightened crank, more to see how close I could get it and to reduce the time for the machine shop to take off metal. I used 4x low friction ball bearings bolted to some spare angle...
10-26-2018, 03:31 AM
Replies: 58
Views: 6,552
Posted By Madjak

The trampoline example is a good way of...

The trampoline example is a good way of visualising a simple system but the harmonics that apply to a crank shaft are very complex. More like a swimming pool with waves of harmonics all interacting...
Showing results 1 to 25 of 500
 


 
Forum Jump

Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.