Buying advice

Bart · Post by **Bart** » Sat Jan 03, 2015 11:45 am

Hi,

I'm off to look at a Chimaera this afternoon. Saw it on Ebay, and spoke to the chap last night. Sounded a very reasonable guy, and has perfect feedback on Ebay with pictures of the MOT and receipts from V8 developments. Today or tomorrow are the only reasonable days I can really go to view, but it's tipping down today. The guy says it's only done dry miles, and he didn't seem very keen for a test drive in the wet. Of course I understand why, but I'm vary wary about shelling out for a car that I haven't at least been a passenger in or driven to listen out for any nasty clunks or noises.

What would you say I should do? Wouldn't be able to buy the car this weekend; would have to pick it up next weekend. Was thinking about offering a deposit if I wanted it, and then ask to test drive it next weekend.

Post by **Coops** » Sat Jan 03, 2015 12:34 pm

offer a deposit on the under standing that once you test drive if not happy next weekend he returns the deposit due to not letting you test drive this weekend,

DaveEFI · Post by **DaveEFI** » Sat Jan 03, 2015 12:48 pm

Weather forecast is dry and sunny for Sunday.

Bart · Post by **Bart** » Sat Jan 03, 2015 4:20 pm

It dried up a bit, so got a spin. Solid chassis, low mileage, dry interior that's like new apart from the odd bit, and lovely engine with MC1 cam installed by v8 Developments. Offered him a deposit to take it.

It kangaroos a bit at low speeds though. Don't think it's owt serious. Maybe ECU remap, because he hadn't had it done with the new cam I don't think. Knocked him down a bit. Quite pleased!

kiwicar · Post by **kiwicar** » Sun Jan 04, 2015 1:31 am

Hi
low seed Kangeroo is one of the following, idle mixture set too lean to get it through the emisions on the new cam, in which case tweak it a bit richer. An air leak on the inlet manifold somewhere, spray some WD 40 at the area whilst it is running and see if it speeds up. . . fix the leak.The ECU can't keep up with the mixture variations at idle brought about by extra overlap on the new cam, talk to Ian Anderson about this one. Two ways to deal with this one, change ecu for an after market one and run alfa N at idle, or just don't drive it at idle in high gears, it's a TVR for goodness sakes!

Best regards
Mike

Ian Anderson · Post by **Ian Anderson** » Sun Jan 04, 2015 7:32 am

I have still got the kangaroo
Just learn to drive around it hold lower gears to keep it out of the kangaroo Rev range

The exhaust runs at 100db so it also sounds great!

Ian

Bart · Post by **Bart** » Sun Jan 04, 2015 10:38 am

Hi, cheers for the advice.

I'll do the usual - check for air leaks etc. After that, I am afraid I know next to nothing about fuel injection, I wouldn't know how to adjust the idle mixture

Is alfa-N where the ECU over rides the signals from the air flow meter when there is a confused signal at low revs? Just had a quick google.

Post by **Coops** » Sun Jan 04, 2015 8:22 pm

I have the odd kangaroo with mine
its going away next month to be set up on the rollers at last and set up to run alpha n off boost and map on boost,

DaveEFI · Post by **DaveEFI** » Sun Jan 04, 2015 11:55 pm

Bart wrote:Hi, cheers for the advice.

I'll do the usual - check for air leaks etc. After that, I am afraid I know next to nothing about fuel injection, I wouldn't know how to adjust the idle mixture

Is alfa-N where the ECU over rides the signals from the air flow meter when there is a confused signal at low revs? Just had a quick google.

Think it's with a wild cam you get poor vacuum at low revs, so speed density is unreliable. Alfa-N effectivley just uses the TPS signal. It's somewhere an AFM would be useful.

kiwicar · Post by **kiwicar** » Mon Jan 05, 2015 2:41 am

Mike