Search found 166 matches

by RenesisRaceBuggy
Thu Mar 07, 2019 6:23 pm
Forum: RX-8 Discussion
Topic: Bleeding Brake Problem
Replies: 324
Views: 12307

Re: Bleeding Brake Problem

But you wouldn't get fluid in the servo without the rear master cylinder seal leaking, and you've had new M/C's on it, no?
by RenesisRaceBuggy
Wed Mar 06, 2019 11:13 pm
Forum: RX-8 Discussion
Topic: Bleeding Brake Problem
Replies: 324
Views: 12307

Re: Bleeding Brake Problem

Is there a diagnostic cycle in the dealer software or similar that will cycle the ABS unit? Some ABS systems won't prime at all unless the valves are cycled in the right order at high frequency and usually it's through command via the manufacturer diagnostic software. I would also, if you haven't al...
by RenesisRaceBuggy
Wed Mar 06, 2019 10:24 pm
Forum: RX-8 Discussion
Topic: Is it worth upgrading the front strut brace? Will it provide any noticeable improvement over the OEM?
Replies: 33
Views: 1163

Re: Is it worth upgrading the front strut brace? Will it provide any noticeable improvement over the OEM?

These are from a half beam/half indy. I've got some Fox freelander units floating around somewhere though, but the only difference is they're 2" shorter stroke
by RenesisRaceBuggy
Wed Mar 06, 2019 8:31 pm
Forum: RX-8 Discussion
Topic: Oil leak front central
Replies: 34
Views: 1175

Re: Oil leak front central

A little late as that does just look like the sump/engine oil - but for future use, hydraulic damper oil is pretty easy to test, it's generally very thin and if you rub it between your fingers it's not actually very slippery - it's generally a poor lubricant, it feels almost dry and you'll still hav...
by RenesisRaceBuggy
Wed Mar 06, 2019 7:48 pm
Forum: RX-8 Discussion
Topic: Is it worth upgrading the front strut brace? Will it provide any noticeable improvement over the OEM?
Replies: 33
Views: 1163

Re: Is it worth upgrading the front strut brace? Will it provide any noticeable improvement over the OEM?

It's not punching through the strut tops, it's bringing the local stiffness up to where it's outside of the top mount and damper frequencies. The lateral loads at a Mcpherson strut top are tiny compared to the wishbone and subframe loads. Generally an order of magnitude lower. If camber control was ...
by RenesisRaceBuggy
Wed Mar 06, 2019 6:57 pm
Forum: RX-8 Discussion
Topic: Is it worth upgrading the front strut brace? Will it provide any noticeable improvement over the OEM?
Replies: 33
Views: 1163

Re: Is it worth upgrading the front strut brace? Will it provide any noticeable improvement over the OEM?

It's not. Strut braces prevent lateral movement of the strut top, which directly and adversely affects the camber control. Strut braces are in totally the wrong plane to contribute to vertical stiffness. McPherson type struts take a huge amount of camber moment. Enough to require larger diameter da...
by RenesisRaceBuggy
Wed Mar 06, 2019 1:47 am
Forum: RX-8 Discussion
Topic: Is it worth upgrading the front strut brace? Will it provide any noticeable improvement over the OEM?
Replies: 33
Views: 1163

Re: Is it worth upgrading the front strut brace? Will it provide any noticeable improvement over the OEM?

Rigidity is incredibly important for damper performance - which is what strut braces are there for on mcpherson strut cars too - it's not to stop the geometry moving around (a minute amount of flex at the top of a strut tower would make almost no difference to the geo) - it's to lift the localised s...
by RenesisRaceBuggy
Tue Mar 05, 2019 1:27 am
Forum: RX-8 Discussion
Topic: To scoop or not to scoop?
Replies: 87
Views: 2965

Re: To scoop or not to scoop?

Keke wrote:
Mon Mar 04, 2019 6:56 pm
So would that duct be made made of some sort of plastic or have I misread your answer?
Yes, it'll be abs/poly or nylon with some chopped fibre in it at a guess.
by RenesisRaceBuggy
Mon Mar 04, 2019 6:45 pm
Forum: RX-8 Discussion
Topic: To scoop or not to scoop?
Replies: 87
Views: 2965

Re: To scoop or not to scoop?

In case anyone isn't sure, ftp is just another name for fiberglass. I believe fiberglass is a trademarked name, but frp isn't. Well, it's generally that anything called fibreglass will be bulk glassfiber held together with a binder (epoxy, vinyl, polyester) - whereas FRP is usually a plastic - ABS,...
by RenesisRaceBuggy
Fri Mar 01, 2019 2:25 pm
Forum: RX-8 Discussion
Topic: How to use cataclean?
Replies: 59
Views: 2049

Re: How to use cataclean?

Make sure you use the fuel with the cataclean in it fairly quickly too, you don't want it sat around in the fuel system for too long, it's extremely aggressive solvents.
by RenesisRaceBuggy
Fri Feb 22, 2019 10:03 pm
Forum: RX-8 Discussion
Topic: 26B Variable length intake tubes
Replies: 14
Views: 550

Re: 26B Variable length intake tubes

Just some trumpets (stood proud inside and clearing the plenum walls to get away from the slow moving boundary layer) will pick up some power if it doesn't have any in there.
by RenesisRaceBuggy
Fri Feb 22, 2019 4:02 pm
Forum: RX-8 Discussion
Topic: 26B Variable length intake tubes
Replies: 14
Views: 550

Re: 26B Variable length intake tubes

There's a single straight through silencer sat over the diff out of the back. But it's still not quiet :D

I've got a photo of the mechanism but damned if I can find it.
by RenesisRaceBuggy
Thu Feb 21, 2019 10:38 pm
Forum: RX-8 Discussion
Topic: 26B Variable length intake tubes
Replies: 14
Views: 550

Re: 26B Variable length intake tubes

350matt wrote:
Thu Feb 21, 2019 10:26 pm
that s pretty cool

what management system do you use ?
got a power curve you'd care to share?
That's a friends, not mine, I only made the brake discs and the diff :D
It's just north of 400bhp on a Pectel


That thread of mine is way out of date, can't update it as non-member peasant :D
by RenesisRaceBuggy
Thu Feb 21, 2019 7:43 pm
Forum: RX-8 Discussion
Topic: 26B Variable length intake tubes
Replies: 14
Views: 550

Re: 26B Variable length intake tubes

It's the port length you need to alter, I'm trying to find my other photo's with the airbox off but basically on this: https://i.imgur.com/QV8pjf4.png The ports you see there have a sleeve going down the inside, with the trumpets on the end, the linear actuator you can just about see in the middle e...
by RenesisRaceBuggy
Tue Feb 19, 2019 8:34 pm
Forum: RX-8 Discussion
Topic: Keyboard shortcuts for dummies
Replies: 13
Views: 469

Re: Exhaust gas temperatures EGTs

I could always tell when I'd gone too far with the idle control pulling timing on the Renny* as the exhaust manifold would suddenly get noticably hotter just stood near it, it's an underrated tuning tool even without sensors. *Like most race cars it ran the throttle open pretty far and the timing pu...
by RenesisRaceBuggy
Mon Feb 18, 2019 4:24 am
Forum: RX-8 Discussion
Topic: Best engine oil for the RX8 231?
Replies: 144
Views: 7423

Re: Best engine oil for the RX8 231?

It stays in suspension because the particle sizes are so small - around 5nm IIRC for their add pack. The reason it still works okay in plate diffs and synchro boxes is because if they pull the other EP additives the tungsten is small enough to fill in asperities in the surfaces without bridging over...
by RenesisRaceBuggy
Sun Feb 17, 2019 6:37 pm
Forum: RX-8 Discussion
Topic: Best engine oil for the RX8 231?
Replies: 144
Views: 7423

Re: Best engine oil for the RX8 231?

Nanodrive is tungsten buckyball based, and most moly additives are the powder form in a cheap kerosene or light mineral oil - which does nothing but block the oil filter and degrade the detergent and despersant addivitives already in the engine oil - moly in oils is already there in the green soluab...
by RenesisRaceBuggy
Wed Feb 13, 2019 8:32 pm
Forum: RX-8 Discussion
Topic: Car Throttle 'Living with a rotary' - Any Questions or requests?
Replies: 125
Views: 6750

Re: Car Throttle 'Living with a rotary' - Any Questions or requests?

Those solonoids do die easily, I killed two or three.
by RenesisRaceBuggy
Wed Feb 13, 2019 12:53 am
Forum: RX-8 Discussion
Topic: Oil level increasing.
Replies: 89
Views: 3252

Re: Oil level increasing.

Never really had an issue with the lightweight flywheel on the buggy, even shunting it up the trailer ramps at low speeds, or crawling around in the queue/driverounds, etc, you just need to be a little more careful shunting in traffic really. I know the cars a lot lighter which helps but it was a ti...
by RenesisRaceBuggy
Sun Feb 10, 2019 11:06 pm
Forum: RX-8 Discussion
Topic: After track day lots of grinding!
Replies: 113
Views: 4263

Re: After track day lots of grinding!

If the unions do feel like they're going to round off, just cut the pipe, put a socket on it and then make up new link pipes, often easier than completely destroying the nut.
by RenesisRaceBuggy
Sat Feb 09, 2019 12:14 am
Forum: RX-8 Discussion
Topic: Cost of rebuild vs diy
Replies: 27
Views: 2269

Re: Cost of rebuild vs diy

I just welded a socket up out of some plate and an old knackered socket.
by RenesisRaceBuggy
Wed Jan 30, 2019 12:54 am
Forum: RX-8 Discussion
Topic: Copper spark plugs... erm.
Replies: 41
Views: 3057

Re: Copper spark plugs... erm.

I'd be very wary, I don't think they do any described as copper plugs, and the RX-8 plugs are a very specific shape, the wrong plugs can kill the engine.
by RenesisRaceBuggy
Sat Jan 26, 2019 1:50 pm
Forum: RX-8 Discussion
Topic: Car Throttle 'Living with a rotary' - Any Questions or requests?
Replies: 125
Views: 6750

Re: Car Throttle 'Living with a rotary' - Any Questions or requests?

Curborough's really tight and twisty, it's a sprint track, hell it's tight in a kart too :D

Used to take the buggy there for shakedowns when we first put the Renny in it, an RX-8 is definately going to be quick there even vs the tuned up BMW.
Well, depending how shagged the rest of the RX-8 is....
by RenesisRaceBuggy
Fri Jan 18, 2019 9:56 pm
Forum: RX-8 Discussion
Topic: Rhombus rotary
Replies: 4
Views: 304

Re: Rhombus rotary

That's going to have insane seal and chamber wear issues, given the tips are taking all the loads. There's also going to be a crankcase full of fuel and air mixture...
by RenesisRaceBuggy
Tue Jan 15, 2019 8:45 pm
Forum: RX-8 Discussion
Topic: premix increase in MPG?
Replies: 68
Views: 2684

Re: premix increase in MPG?

Some friction reduction (2 stroke oils will lubricate to much higher temps than normal engine oil), but mainly better sealing, - you see the same on 2 strokes, going from 100:1 right up to silly ratios like 10:1 still increases power, and only after that do you start to struggling from oil fouling a...

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