Tyre pressures and general appraisal

[Classic Chim]

Hi you lucky later speed six engined car owners.
Here we have what is generally an excellent car and feels taught, engine no rattles sounds epic and goes very well. Brakes are great and overall feels really well maintained.
Looks like rodents have attacked the interior at some point so in need of replacement but seats are really comfy and the drivers love this car.
What TYRE pressures do you guys suggest for this car on these tyres. Sorry I forgot to check sizes but what’s the general consensus please.
Appraisal comes via only 9 customers who came to drive this car and 6 of them wanted extra laps and all thought it fantastic. None were owners before although a number said they’d always wanted to drive one. 6 out of 9 is nearly a record for any car there. I was the instructor

It’s lethal in the wet if you apply the throttle in the wrong place but actually lots of grip and already has the reputation for being the most frightening car there and by heck it goes.
I quite like how it has controllable torque and yeah I love that hp at the top end.
Is it safe to rev it to 6000

It sounds like the best car there and stands out a mile.
I just thought it would be nice to share that

[Granturadriver]

Many have 1,5 bar at front and 1,7 bar at rear.

[Classic Chim]

Thanks.

[jev]

I thought the general consensus was 24psi all round. On the 18 inch spiders (which is what those look like).

225/35 front. 235/40 rear.

Do check the wheels are round. Those spiders look lovely but are easily buckled.

[cammy71]

Have T350 on 18" spiders and keep to 25psi all round (undriven pressure i.e. cold). Came back several moons ago from service and have kept to that and has been no issues.

[hxc_]

Of course it's safe to rev to 6000. So long as its all warmed up. If it's on track you should only be shifting when the change up lights tell you to

[Classic Chim]

hxc_ said:

Of course it's safe to rev to 6000. So long as its all warmed up. If it's on track you should only be shifting when the change up lights tell you to

I didn’t know there were any change up lights, haha. This is a whole new ball game from my humble but brilliant Chim.
I prefer my ear and so far I’ve only ran it upto around 5500 but had it upto about 110 mph a few times. The brakes are really well suited and stop the car well.

The point about the spider wheels is a good shout.
I feel there’s an issue with a wheel balance or wheel itself as there’s a subtle vibration at speed I’m trying to identify.
Need wheels off the floor and check bushes bearings etc.

I really enjoyed the onboard screen and watching engine parameters.
Water 89
Oil pressure at a hot idle 11 psi or slightly higher
50 psi at anything over about 2000 revs
Oil temp quite low and in the 80’s but I only looked once.

Just to confirm.
I ran the car up from cold at 1500 then 2500 then 3000 revs and it quickly came upto about 60d before I did some practice laps in the rain. The car came back a steady 89d
What oil temps from cold do I want before using the car hard. Often the car will stand for 1/2 hr and cool down to a water temp of 60d before being used again.
What oil temp would you be comfortable with before accelerating hard.

Edited by Classic Chim on Wednesday 20th March 22:33

[mk1fan]

You can set the revs for the three change up lights via the settings in the dash screen.

As the car is being used for commercial track duties then I would recommend upgrading the dash screen for a 'Lee Gascoinge' version. Jody from Python Racing may have taken over the supply / can offer similar. Factory ones are pony in any sort of daylight level even by TVR standards.

You may wish to invest in a paper copy of Reg Varley's Sagaris Bible - expensive. Although I believe it is available digitally on the TVRCC forum.

Worse case you can feel the butterfly in the throttle body is loose but even an undetectable [by hand] movement can throw out the balance. If the body or bodies don't stay balanced as you set them up then this indicates worn bushings. andy_mr2sc on here used to mod them. May still advertise in the classifieds. Powers also offer the upgrade - https://powersperformance.co.uk/machining/slug/spi... . A set of thermal gaskets would help for on track use too.

[mk1fan]

As for wheels. I would suggest getting a different set of 18s. The 18-inch spiders are heavy and weak. Prone to buckling and expensive to replace.

I'd suggest switching to 225/40 all round and getting some modern 'sports' rubber. You could swap to 16-inch Spiders which don't buckle. The factory fitted 225/50 all round with the 16-inch Spiders.

[TwinKam]

Alun, have you been hacked? I keep getting spurious emails 'from you' (clearly not from you)...
Best,
Rik

[Classic Chim]

TwinKam said:

Alun, have you been hacked? I keep getting spurious emails 'from you' (clearly not from you)...
Best,
Rik

Barstewards
Is this from my old @mail.com or my current @iCloud account Ric, sorry bro, not that I’m aware of!

I’ve just changed passwords on here and noticed my email is for my old address which ive not used in years so I’ll change that too.
AL

[TwinKam]

Classic Chim said:

TwinKam said:

Alun, have you been hacked? I keep getting spurious emails 'from you' (clearly not from you)...
Best,
Rik

Barstewards
Is this from my old @mail.com or my current @iCloud account Ric, sorry bro, not that I’m aware of!

I’ve just changed passwords on here and noticed my email is for my old address which ive not used in years so I’ll change that too.
AL

... your full name (ie with the unusual spelling of your forename) in the 'from header', from overly complex email addresses ending in .fr .lk .ni & .br respectively, I've had four in the past month alone but had deleted plenty before that, the most recent .br one only yesterday.
Want me to forward them to you?