Discuss here about Yoeddynz's little Imp project...

[440bbm]

Would a little gullwing on the corner of the rear help?  either old mazda style, or a bit more flat so that stops the lift from  very rear up to the rear screen area. should stop it coming right up? 

[yoeddynz]

Possibly although I'm not even sure if the fumes creep in through the rear opening window or if they are making the way through gaps/holes in the rear bulkhead via the engine bay because this imp has the heavily vented sport engine cover. 

I'd not want to add a rear spoiler anyway although the front might one day get a tiny bib spoiler. 

Ive now finished version 3.1 with extended tailpipes pointing out at 45 degrees to try next...

 

 

[440bbm]

Ah, that makes more sense. 

Spose the next thing on the list is to get sealing between the cabin and engine bay then!

[yoeddynz]

I've already done what I can there as far as I can spot.

[Mof]

Seeing as you've got bolt on flanges there, can you make up some Boso pipes for barry car shows?

[yoeddynz]

The world is my oyster.

Thinking vertical stakes with heat shields and flappy rain guard things on the top.

[mjrstar]

^^ weighted so the flaps clatter open and closed at idle with a satisfying tinkity tink

[yoeddynz]

Perfectly weighted and tuned to replicate the clatter of an aircooled engine.

[Alfashark]

I finally remembered the example of how different exhausts make a huge difference to the sound - Series 1 Dodge Viper.

The drop-top with the side pipes sounds like a rowdy 5-pot (yum!) except it's two 5-pots just out of sync.  The GTS hard-top has the exhausts exiting the center of the rear bumper, and sounds totally different despite having no crossover pipe at all.

The second generation got a crossover and sounds completely different again.

[Roman]

What a hell of a thread to start skim reading

[Truenotch]

Makes sense tbh. This project makes my flaps clatter. 

[yoeddynz]

Would you two just please clam up.

[yoeddynz]

It's a very slippery hole you're heading into. 

[Truenotch]

You're three one showing off your pipe to everyone 😄

[R3spct]

My Datsun 1200 coupe had bad exhaust smells, wasnt bad with front windows open and I didnt care as mostly drove with them open, but with closed it got bad.  There was a 1.5mm gap under boot rubber in one spot, fixed the rubber and all smells went away.  Only seems to take such a small gap to let the gasses in.  Sure wind tunnel testing would provide some interesting insight into why the gasses can go from a tail pipe extending 100 past the rear valance, up 500mm or so and into the cab when you are going forward.

[Lord Gruntfuttock]

Luckily you can wind tunnel test an imp inside a toilet roll tube with a hair dryer...

[tortron]

 

 

[VitesseEFI]

Usual classy work on the instruments. Came out nicely.

Not sure I’ve fully understood the technology of the replacement speedo. Obviously I do understand the speed calibration part but how have you gone about calibrating the odo?

 

[Roman]

Whoa, instruments look awesome! 

Nice work as always.

[yoeddynz]

11 hours ago, VitesseEFI said:

how have you gone about calibrating the odo?

I could just leave it reading whatever it's at. No one will care on a classic. But normally on older speedo heads the number rollers can be clicked around to suit by using the rubber on the end of a pencil (remember those? ) 

More modern ones are shrouded in plastic leaving no room to get the rubber in. 

And we can ignore digital odos because they are the devils work and don't belong on classics 

Obviously from now on according to carjam etc my cars odo figures will increase faster because reading in kms instead of miles. I don't care. 

But I do keep a little book of records for economy and recording when things get swapped/oil changes/brake pads and other associated records that Barrys like to keep a note of so it'll be nice to set the new odo to match that.