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05-07-2019, 09:21 PM
Replies: 1
Views: 279
Posted By DavidNJ

SAE Paper on Driver Restraints

This paper is from 2015 and evaluated a harness on a NASCAR seat. They found that mounting the anti-submarine belts in a 6pt system in line with the lap belts and a wide 12,5" base produced less...
04-23-2019, 07:34 PM
Replies: 251
Views: 43,949
Posted By DavidNJ

https://www.s2ki.com/forums/s2000-forced-induction...

https://www.s2ki.com/forums/s2000-forced-induction-142/my-turbo-motec-build-1125067/page11/#post24460203

Magnus Honda S2000 Sheetmetal Intake Manifold – Magnus Motorsports...
04-14-2019, 07:51 PM
Replies: 13
Views: 841
Posted By DavidNJ

One big difference between PTuning and SOS is the...

One big difference between PTuning and SOS is the wastegate. SOS uses an internal wastegate (which I'm usually a fan of) but with the older Garrett 5-bolt flange. The newest Garretts and BW EFR dump...
03-25-2019, 03:16 PM
Replies: 19
Views: 1,679
Posted By DavidNJ

It's more complex. For many cars, less roll keeps...

It's more complex. For many cars, less roll keeps the tire at a more favorable angle. While not a Street solo II issue, for many cars lowering adversely affects the suspension geometry, where running...
03-24-2019, 01:10 PM
Replies: 19
Views: 1,679
Posted By DavidNJ

You didn't say where. On the street? At track...

You didn't say where. On the street? At track days? In Autocrosses? Each has different criteria.

For example, competitive competition classes have rules, where w2w or not. Street autocross classes...
02-17-2019, 12:02 AM
Replies: 13
Views: 2,427
Posted By DavidNJ

They are antiques. It was a much earlier time,...

They are antiques. It was a much earlier time, performance has advanced by leaps and bounds since then. Also, the RE11A worked better on lighter cars like the S2000, the RE11 wasn't a good fit...
02-16-2019, 02:05 AM
Replies: 16
Views: 1,477
Posted By DavidNJ

The Kirkey 71 is smaller...not quite as rigid in...

The Kirkey 71 is smaller...not quite as rigid in the shoulders and head as the 73. It is popular in Spec Miata. Note: I've been posting dimensions for the 16" seat; it also comes in a 14" and 15". ...
02-15-2019, 03:21 PM
Replies: 13
Views: 2,427
Posted By DavidNJ

Unfortunately, tires in 16" and really also 17"...

Unfortunately, tires in 16" and really also 17" sizes are becoming rarer and rarer. Especially performance tires.

For non-race street tires, the best choices are probably the Dunlop Direzza ZIII,...
01-10-2019, 04:29 PM
Replies: 23
Views: 2,243
Posted By DavidNJ

Racing cars have accidents. There has been a lot...

Racing cars have accidents. There has been a lot of insurance fraud with this, both staged accidents or claiming race damage as part of a legitimate street collision or comprehensive claim. They...
12-11-2018, 02:42 PM
Replies: 39
Views: 3,280
Posted By DavidNJ

This may be helpful: Wilwood Air Ducting for...

This may be helpful: Wilwood Air Ducting for Short Track Stock Car Racing https://www.wilwood.com/PDF/DataSheets/ds254.pdf
08-31-2018, 12:17 AM
Replies: 40
Views: 1,973
Posted By DavidNJ

The key is really the type of racing, the level...

The key is really the type of racing, the level of competitiveness, budget, safety, and tolerance for discomfort.

The discussion has been about TT5, which isn't fender-to-fender racing. The NASA...
08-26-2018, 10:13 AM
Replies: 14
Views: 7,906
Posted By DavidNJ

The Toda spec sheet below references modifying...

The Toda spec sheet below references modifying the rocker arms. Big cams sometimes require aftermarket arms which can have a bigger roller on the rocker, lighter weight enabling higher revs, and more...
07-15-2018, 08:40 PM
Replies: 104
Views: 15,617
Posted By DavidNJ

https://www.youtube.com/watch?v=h0ahn7wld2E

https://www.youtube.com/watch?v=h0ahn7wld2E
06-29-2018, 06:57 PM
Replies: 3
Views: 923
Posted By DavidNJ

Apex Wheels

I was nosing around the Track Mustang forum and saw multiple recommendations for Apex wheels. Apex???

The Mustang has the 114.3 x 5 bolt pattern. Same as the S2k. The have an 18x11+52, 18x10+43,...
06-14-2018, 07:48 PM
Replies: 16
Views: 1,034
Posted By DavidNJ

The Gentex is a mirror when the camera is off....

The Gentex is a mirror when the camera is off. The RV cameras would leave the interior mirror in place.

The Gentex doesn't have a record function. The RV cameras do, and could be a 4 camera setup....
06-12-2018, 03:28 PM
Replies: 16
Views: 1,034
Posted By DavidNJ

Mirrors are very important for maintaining...

Mirrors are very important for maintaining situational awareness, especially when there are big speed differential between cars. The easier it is interpet with fewer missing views the more the driver...
06-02-2018, 05:14 PM
Replies: 13
Views: 1,334
Posted By DavidNJ

It is possible to put the stock spring perch on a...

It is possible to put the stock spring perch on a coilover body with OEM springs in B/Street. PSI sells Ohlins TTX and Penske 8300s this way, both of which could be used in B/Street and STR. In...
05-29-2018, 05:20 PM
Replies: 13
Views: 2,209
Posted By DavidNJ

Thank you very much for purchasing our product. ...

Thank you very much for purchasing our product.
This product is the installation position of the steering gear box ASSY of S2000
We have made it possible to obtain the proper geometry of the...
05-28-2018, 07:08 AM
Replies: 24
Views: 3,669
Posted By DavidNJ

Why would someone race an S2000? Porsche actively...

Why would someone race an S2000? Porsche actively sponsors race series and builds 3 or 4 different ready to race cars. MB does the same.

Race cars are built to rules and the rules are designed to...
05-22-2018, 10:22 PM
Replies: 1
Views: 1,028
Posted By DavidNJ

4Piston Review of K20C1 Cylinder Head

There really isn't a right forum for this, I thought it may have the biggest audience here.

The K20C1 is the direct injected turbo engine in the Civic Type-R. 4Piston reviewed heads JE Piston had...
05-15-2018, 07:37 PM
Replies: 108
Views: 9,100
Posted By DavidNJ

The ND Miata has lots of issues as a track day...

The ND Miata has lots of issues as a track day car. All the rollbars are two narrow IMHO. Same seat issue as the S2k. And the suspension is way too soft. MrSideways, a frequent poster here, won the...
04-17-2018, 08:11 PM
Replies: 4
Views: 353
Posted By DavidNJ

Someone who lives in California.

Someone who lives in California.
04-16-2018, 09:38 PM
Replies: 10
Views: 2,490
Posted By DavidNJ

I can't speak to the track days (which aren't...

I can't speak to the track days (which aren't competitive anyway), but in autocross I'm not sure what you are expecting. The springs and wheels will probably put you in either STR or a modified...
04-13-2018, 06:02 PM
Replies: 108
Views: 9,100
Posted By DavidNJ

There are some pretty rich people in SRF. They...

There are some pretty rich people in SRF. They own multiple cars and the SCCA CSR maintains the car and brings it to the track. They also rent cars when they go to races far from home.

There are...
04-07-2018, 02:29 PM
Replies: 108
Views: 9,100
Posted By DavidNJ

??? https://youtu.be/qMmjaaSQP08?t=42s

???

https://youtu.be/qMmjaaSQP08?t=42s
Showing results 1 to 25 of 42
 


 
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