31 replies to this topic

[Peggen]

Hi, Looking for a high spec track and race car, appearance and interior not important. SC or ITB engine (no turbo please) with around 250bhp and appropriate upgrades. Chassis upgrades for racing such as ball joints, bushings, ARBs, dampers, brakes, toe links, wheels, windows, belts etc. Price depending on spec and build quality. - I will pay for something race ready, but nothing extra for nice seats or stereo etc. (Have a road legal rhd 225bhp/600kg Sylva Phoenix if exchange is interesting.) Johan

[CHILL Gone DUTCH]

The last SC vx220 race car sold for 20k Admittedly it had a extra 100 hp but just gives you some idea

[fiveoclock]

You wont get get an ITB with 250

[siztenboots]

was going to say , buy Marks , thats a multiple trophy winning , race proven car.

[fiveoclock]

was going to say , buy Marks , thats a multiple trophy winning , race proven car.

Not for sale, will be undergoing a winter refresh ready for next season

[vocky]

You wont get get an ITB with 250

 

you certainly can, but it costs quite a lot

 

Mine is somewhere around that figure, but it's £25k if anybody wants to buy it, so isn't going anywhere

[fiveoclock]

 

You wont get get an ITB with 250

 

you certainly can, but it costs quite a lot

 

Mine is somewhere around that figure, but it's £25k if anybody wants to buy it, so isn't going anywhere

 

What I meant was he wont find an ITB with 250 with all the race stuff he wants on it. It'll be hard enough finding any ITB with all the race stuff he wants on it. I'm not aware of a race ready ITB car in the UK apart from mine and mines not for sale

Edited by fiveoclock, 12 October 2015 - 05:28 PM.

[Bargi]

I'd be worried about racing either an ITB or SC at 250hp for long term reliability. Guess it depends on what type or racing and how long the sessions will be. Stick with standard internals in case you need a new engine.

[fiveoclock]

I'd be worried about racing either an ITB or SC at 250hp for long term reliability. Guess it depends on what type or racing and how long the sessions will be. Stick with standard internals in case you need a new engine.

As you know this is what I do. I'm at 158 at the hubs so prob about 175 to 180 at the fw. I've done three seasons of 45 minute races (prob done around 22 races now with an oil change for every meeting) and I'm on my third engine and fourth gearbox. Even at my low power I look upon engines and gearboxes as consumables. I have a spare 4.17 gearbox ready to go in whenever I may need it and am trying to do the same with an engine (so with cams, springs, chain, balancer delete already done) Joe       

Edited by fiveoclock, 12 October 2015 - 06:32 PM.

[Bargi]

I'd be worried about racing either an ITB or SC at 250hp for long term reliability. Guess it depends on what type or racing and how long the sessions will be. Stick with standard internals in case you need a new engine.

As you know this is what I do

Absolutely, I thought I'd best let you confirm the tally ☺ The other competitive stuff (that I'm aware of) that VXs have competed in haven't been so demanding so less if an attrition rate.

[vocky]

so what is causing the engine failures ?

 

low oil level - big ends dead

low oil pressure - cam bearings seized

con rod failing 

piston imploding - det

valve head(s) dropped off

[fiveoclock]

Wear and tear from being hammered flat out for 45 minutes race after race after race culminating in low compression in one cylinder both times. Not really opened them up to find out why

[vocky]

probably ringland failure then, std pistons are terrible for doing that

[Goosenka]

so what is causing the engine failures ?   low oil level - big ends dead low oil pressure - cam bearings seized con rod failing  piston imploding - det valve head(s) dropped off

Have you ever driven around a track with Mark? Therein lies the answer.

[fiveoclock]

probably ringland failure then, std pistons are terrible for doing that

Thats what I assumed. One went at Brands right at the end of a race, onto 3 cylinders but finished the race without losing a place and another went in qualifying at Oulton Park. Again onto 3 cylinders. Decided to race anyway as only 5 in my class. Amazingly the engine kept going for 45 minutes, wouldnt rev over 4500 for the last two laps though but one car crashed, another had terminal engine failure and I came in third in class and got a stupid plastic cup!! I really need someone to build me an engine thats going to last. Do you know anyone? 

[oakmere]

Very surprised the engines can't take 45min races even if it is bouncing off the Rev limit most of the time. If it is the Pistons letting go I would be getting the mapping checked out.

[fiveoclock]

Very surprised the engines can't take 45min races even if it is bouncing off the Rev limit most of the time. If it is the Pistons letting go I would be getting the mapping checked out.

The car was mapped by Alan Collins at Webcon. There is nothing wrong with the mapping

[oakmere]

Could it be fuel starvation under certain conditions on track? Ringland do go but it tends to be on boosted engines.

[jonnyboy]

Mark this might be a daft question but why not just leave the engine near standard? To finish first first you must finish and all that.

[Peggen]

I've currently got a C20XE engine (no VX) with ITB and the usual mods inside that makes 225bhp. It has lasted many track days with hours of driving. Perhaps because all support systems are over sized. It always runs cool, has plenty of fuel, constant high oil pressure and level etc. Surprised the newer engines are worse? Is it heat, high revs, design?