Formula Renault BARC '08 - Page 6

jedrinck · 21 Oct 2008, 16:22 (Ref:2317681)

How does one vent the cooling system on a 97 tatuus? I failed to do a slow lap for cooling purposes and some water came out of the overflow after I shut the engine down. Now I can't seem to get an adequate amount back into the system. I tried running the engine and pouring water in but it won't take any and the gauge quickly went to 100 degrees while the radiators stayed ice cold. Also, when there is oil in the catch can, does that mean there was too much in the system? I found about 600 ml in there.

Triple J Motorsport · 22 Oct 2008, 09:02 (Ref:2318119)

Quote:

Originally Posted by Sparky57

Thanks Triple J I've already been looking at this and it's quite attractive especialy due to renaultsports recent genorosity. It's encouraging as i've been a couple of tenths up on the fastest lap times at most circuits F4 have done but I'm expeecting a big drop in times due to the ride height raise and only a small gain due to the restrictor removal (Bob reported very little difference when his fell out) It would be nice to free up ECU's so we can actually gain performance from the restrictor removal and close the gap a bit.
Also under the F4 regs i don't see anything about changing the roll centre of the suspension which the FR's could do to compensate slightly for the ride hieght jack. Is this legal? I know of James simons is almost definatly doing F4 and 2 others who are thinking of it, i'm a third, so it is possible we would form a group to race with and find our equivilent rivals within the F4 pack

. Whats the racing in F4 like? I'm going to mallory on sunday to find out.

ECUs are free too you should get a sheet soon from Renault confirming this and free ratios free wings diffusers and the avon slick tyre list (wets are free).

Bob Pearson · 22 Oct 2008, 10:06 (Ref:2318161)

I wouldn't reccomend changing the Tatuus wings, we found them very efficient and well balanced. Just make sure you have a stiff front wing tube for the high downforce circuits.
We never had problems with air in the cooling system of that car (Jedrink) The correct way to bleed it is to unscrew the plastic plug at the top of each radiator, although they are difficult to move.
Failing that undo the hoses where they go on to the radiator and push quickly
them quickly back on as the water comes out.
We have to do that to get the Fr2000's to bleed.
The oil level should be just on the top of bulge in the oil tank which is the top of the tube that the gearbox shaft passes through. Make sure you run it for a few minutes before you check it to get the level in the sump correct.

jedrinck · 22 Oct 2008, 17:05 (Ref:2318441)

Thanks Bob. I thought of that, too but I assumed there had to be an easier way. But then the car was designed in Italy so it all makes sense.

Sparky57 · 23 Oct 2008, 08:29 (Ref:2318827)

Keep the wings but move them?

Bob Pearson · 23 Oct 2008, 09:27 (Ref:2318878)

Regarding the Tatuus, I wouldn't change any of the wings, shape or mounting, except for a stronger front tube and make sure you have two spacers in the rear wing plates ( most cars have). I can't vouch for other makes of car.

JNWRF01 · 23 Oct 2008, 12:22 (Ref:2319027)

Bob - in your opinion - if we put Ian in a well prepped FRenualt run to the new F4 rules (free ratios/40mm/Avons/free ECU/no restrictor) around lets say Snett - any guesstimate of lap times? 1.07s/8s/9s?? Lower?

Or if anyone has a Tattus or similar they wanted to bring to Snett - be intresting to back to back against the current A class F4s...

Bob Pearson · 23 Oct 2008, 12:35 (Ref:2319043)

Quote:

Originally Posted by JNWRF01

Bob - in your opinion - if we put Ian in a well prepped FRenualt run to the new F4 rules (free ratios/40mm/Avons/free ECU/no restrictor) around lets say Snett - any guesstimate of lap times? 1.07s/8s/9s?? Lower?

Or if anyone has a Tattus or similar they wanted to bring to Snett - be intresting to back to back against the current A class F4s...

Unfortunately we have sold our last one now, otherwise I think we would be tempted out of interest to see how it worked out.
In reply to your first question, we really have no idea what the ride height change will do to the handling. The best lap Ian has ever done in a BARC 8 valve at Snett was 69.5. The BARC ratios are closest to correct at Snett, Eurocup chip will help the car along a bit, tyres and restrictor won't make much difference, but the ride height? all I can say is it must slow it down, but by how much? Without the same person doing a back to back we'll never know.

JNWRF01 · 23 Oct 2008, 13:58 (Ref:2319110)

Sounds like mid 10s will be the pace...

Bob Pearson · 23 Oct 2008, 14:19 (Ref:2319128)

Quote:

Originally Posted by JNWRF01

Sounds like mid 10s will be the pace...

I reckon you will have to wait a fair while to see a mid 10, in 2008 the fastest lap in BARC trim was a 12 dead, in 2007 it was Ian at 10.1.

Sparky57 · 23 Oct 2008, 19:25 (Ref:2319317)

I don't think you can put a time on it as no one knows how they handle at 40mm. Besides itl take a while for us to tune our cars in and get used to the new circuits F4 does plus of course theres the badger injection to get right (I thought i'd start the racing excuses early).
Anyone looking for chips for the Siemens ECU should contact me as i think i've cracked them. If Anyone had a eurocup chip thingymajig that i could borrow for a week that would help alot too thanks.
I like the new regs reserving the right to re-introduce the restrictor. I don't think it'l be needed but i guess no one knows really. Best to be safe.

jedrinck · 27 Oct 2008, 14:44 (Ref:2321842)

So if I could get my hands on a eurocup "EPROM", could I install that in the ECU myself?

Another thing that crossed my mind, would it be cool to use Kumho F3 tires on a F Renault? Will they make the car faster? They would require a 10mm ride height adjustment at the front but other than that they should fit well.

andy97 · 27 Oct 2008, 15:29 (Ref:2321865)

Quote:

Originally Posted by Sparky57

I don't think you can put a time on it as no one knows how they handle at 40mm. Besides itl take a while for us to tune our cars in and get used to the new circuits F4 does plus of course theres the badger injection to get right (I thought i'd start the racing excuses early).
Anyone looking for chips for the Siemens ECU should contact me as i think i've cracked them. If Anyone had a eurocup chip thingymajig that i could borrow for a week that would help alot too thanks.
I like the new regs reserving the right to re-introduce the restrictor. I don't think it'l be needed but i guess no one knows really. Best to be safe.

They have been run in Monoposto at 40mm several times, although I don't think that a really quick driver has ever run one.

lear45xr · 8 Nov 2008, 14:35 (Ref:2330648)

hi.
any renault experts know where i could get a set of clutch slave cylinder seals & release bearing from & anything to watch out for replacing them. just noticed mine is leaking. is it r sport parts or can they be got somewhere else.
thnx ian

it is a 8v.

jedrinck · 9 Nov 2008, 19:14 (Ref:2331127)

Lear 45 Pilot who owns a F Renault? I fly a 60 and drive a 97 tatuus. Welcome!

lear45xr · 9 Nov 2008, 22:46 (Ref:2331253)

hi jedrinck.

unfortunately i dont pilot a lear45xr just work for the company that builds them.

atb ian

ianpearson · 10 Nov 2008, 14:07 (Ref:2332475)

Quote:

Originally Posted by lear45xr

hi.
any renault experts know where i could get a set of clutch slave cylinder seals & release bearing from & anything to watch out for replacing them. just noticed mine is leaking. is it r sport parts or can they be got somewhere else.
thnx ian

it is a 8v.

clutch seal kits have got very hard to get hold of. they were r sport parts but are no longer made. we used our last set on a car we sold recently but never did find another supplier

Sparky57 · 10 Nov 2008, 18:02 (Ref:2332597)

Give James at Grand Prix Racewear a call the do realease bearings for them and i think they might do seals as well

Redracer77 · 10 Nov 2008, 23:51 (Ref:2332806)

anyone know how many BARC renaults will be joining us in F4 next year??

Sparky57 · 11 Nov 2008, 10:03 (Ref:2332998)

I think it's a maximum of 4 but it could be 1 form BARC

mark14 · 27 Nov 2008, 07:59 (Ref:2342607)

Anyone know whether an equivalent of the 'Eurocup' chip for the 8V ECU is likely to be available ? - I've never seen an original one for sale.

jamessimons · 29 Dec 2008, 17:29 (Ref:2362379)

Does anyone have an external oil pump or pulley that they would like to sell for an 8v? As mine is worn quite badly. If so please contact me as the original manufacturers no longer make them so it would mean having one machined.

lear45xr · 30 Dec 2008, 15:00 (Ref:2362782)

Quote:

Originally Posted by ianpearson

clutch seal kits have got very hard to get hold of. they were r sport parts but are no longer made. we used our last set on a car we sold recently but never did find another supplier

hi managed to get clutch seal kit from titan had to wait for 6 weeks for their supplier to make them.

now my next problem. removed back end from car to replace seals removed the small bolt & washer that seems to hold in the outer part of the cylinder. but the cylinder seems to be seized in into the bellhousing is there anything else to be removed to take it out. if not how do you get a seized one out!!!
thnx ian

Bob Pearson · 2 Jan 2009, 09:58 (Ref:2363945)

If you have disconnected the hydraulics, re connect them, bleed it and press the pedal. The hydraulic pressure will push the assembly out.

Dermot Healy · 2 Jan 2009, 15:37 (Ref:2364108)

Quote:

Originally Posted by jamessimons

Does anyone have an external oil pump or pulley that they would like to sell for an 8v? As mine is worn quite badly. If so please contact me as the original manufacturers no longer make them so it would mean having one machined.

....oh yes someone does...and some complete engines & numerous other bits from 8vs that he would like to get rid of!.....07703-162409