949 Racing project car - Blub

[turbofan]

We will post when we have more to share. No updates at this time.

[Goingnowherefast]

Me waiting for Xidas to come out:

[Pat]

How has the APR bumper cover worked out? It looks like the tow hook hold doesn't line up right. Or is that because the tow hook location changed when you were fiddling with the bumper beam?
What kind of durability should one expect with the APR bumper cover relative to OEM?

[949 Racing]

Originally Posted by Pat

How has the APR bumper cover worked out? It looks like the tow hook hold doesn't line up right. Or is that because the tow hook location changed when you were fiddling with the bumper beam?
What kind of durability should one expect with the APR bumper cover relative to OEM?

It never did fit well, weighed more than OEM. It was chopper gun FRP. We asked APR to extend the spoiler section across the section, make it hand laid (to save weight) and improve the fit. They agreed to make another one hand laid and improve the fit but thought changing the mold was too big a step considering they don't sell many. Will report back whenever we get it.

Meanwhile, we got the rev 2 strut flanges. If they give us the alignment numbers we need and end link clearance is good, we'll finally go into production with the Xidas. Been done for almost tow months, just waiting on the revised flanges. Fingers crossed we got everything right. One more test day and we're a go.

[Pat]

Thanks for the quick response. That was kind of what I expected given other things I've read. Bummer. As of right now I'm planning on going with another OEM bumper cover, as mine was damaged today. Are there any other ones you think I should consider? I believe we have the same priorities.

[949 Racing]

Originally Posted by Pat

Thanks for the quick response. That was kind of what I expected given other things I've read. Bummer. As of right now I'm planning on going with another OEM bumper cover, as mine was damaged today. Are there any other ones you think I should consider? I believe we have the same priorities.

The list of front ends I was looking at, in no particular order or preference.

Chargespeed BRZ T1 bumper
Espirit half lip
COC style front bumper
Varis Arising II
varis Arising lip spoiler
Ings N-Spec bumper
Vis Racing bumper

Most had side duct/vent areas that were far larger than we needed and thus draggy. Weigh that against potential downforce from horizontal lip area. The perfect lip, IMO, would be the APR in hand laid FRP, better fitting with the spoiler section going all the away across, not just on the sides.

Fog light holes are too far outboard to use for brake ducts with any flow. Would be nice to have some 3" duct ports much closer to car centerline for brake ducts.

[churchx]

IIRC Touge Factory duct kit was such, as you plan, with inlets behind main grill.

[949 Racing]

Originally Posted by churchx

IIRC Touge Factory duct kit was such, as you plan, with inlets behind main grill.

This is where practical knowledge winning endurance championships makes a difference. The diameter of those hoses and multitude of sharp bends will mean no useful airflow actually reaches the brakes. While that kit looks really neat, it won't actually do much. When we build brake ducts we actually measure the airflow. You learn a lot doing that

Brake ducts should be no less than 3 inch. Even a dead straight 2.5 in hose flows very little past about 18 in. They should have minimum number of total direction changes. Each direction change causes the flow to be disrupted and lose energy. Take a 3 ft long hose, put three or four direction changes on it and you have pretty much killed the air flow. One key factor is that brake ducts hoses are corrugated which have very low flow coefficients meaning the airflow is not smooth and fast through them. That corrugation creates a large boundary layer that ends up killing about 30% of the total area of the hose. In a 2.5 inch hose the boundary layer virtually chokes the hose when you get past about 18 in.

It's common in pro-level endurance cars to use two 3 in hoses per wheel.

[churchx]

949 Racing: are you planning making (and maybe also releasing/selling) your own duct kit? If so, what i'd wish in such - for it to not require to reduce steering angle to prevent rubbing (not that difficult with steering rack spacers, but would love to get both more angle and ducts, not choose between) and to not require removal/modding of stock fog lights/stock washer liquid tank. And imho it might benefit from exchangeable backing plate flat part of different diameters, so to fit on different brakes, from stock, to different most popular BBKs. Though of course one can buy just backing plates of Verus for use on stockers, or something like essex Endurance APR BBK has own backing plate in set.

[949 Racing]

Originally Posted by churchx

949 Racing: are you planning making (and maybe also releasing/selling) your own duct kit? If so, what i'd wish in such - for it to not require to reduce steering angle to prevent rubbing (not that difficult with steering rack spacers, but would love to get both more angle and ducts, not choose between) and to not require removal/modding of stock fog lights/stock washer liquid tank. And imho it might benefit from exchangeable backing plate flat part of different diameters, so to fit on different brakes, from stock, to different most popular BBKs. Though of course one can buy just backing plates of Verus for use on stockers, or something like essex Endurance APR BBK has own backing plate in set.

No plans. Tough to do on a street car actually. Out little team is buried in projects and that's just too far down the list. Based on the info in my previous post, the average owner can design and implement something home brewed. Much easier to just click a "buy" button I know, we just don't have the resources to add that that our to do list now.

[Goingnowherefast]

Apologies if I missed it, do you guys run a square brake compound setup or staggered like the Miata stuff?

[949 Racing]

Originally Posted by Goingnowherefast

Apologies if I missed it, do you guys run a square brake compound setup or staggered like the Miata stuff?

Wilwood 14" F&R brakes
G-Loc R18 front, R12 rear

[949 Racing]

Final test day at Sonoma last week. Managed a 1:50.7 which appears to be the N/A lap record for an 86 on any tire.

This was with about -4° front camber using the highest offset camber chips with the plates close to zeroed out. Oddly enough, we still haven't touched the rear alignment. Very slight rear toe in is stock. Whatever rear camber we picked up gave us pyrometer readings that have been spot on. Also still running stock rear sway.

We have pretty much reached our goals with this project. Very happy with the results. So development pretty much ends. We will keep the car around, run some 86 Cup and 86 Drive Challenge events but move on to other projects for 2020.

[ame]https://www.youtube.com/watch?v=S4J6giq3e_g[/ame]

[ka-titties]

Originally Posted by 949 Racing

Final test day at Sonoma last week. Managed a 1:50.7 which appears to be the N/A lap record for an 86 on any tire.

This was with about -4° front camber using the highest offset camber chips with the plates close to zeroed out. Oddly enough, we still haven't touched the rear alignment. Very slight rear toe in is stock. Whatever rear camber we picked up gave us pyrometer readings that have been spot on. Also still running stock rear sway.

We have pretty much reached our goals with this project. Very happy with the results. So development pretty much ends. We will keep the car around, run some 86 Cup and 86 Drive Challenge events but move on to other projects for 2020.

Will y'all still be releasing a track spec Xida?