1145 replies to this topic

[Graeme Lambert]

The first sketch looks very tasty! Similar to what I'm trying to do

 

Just had a proper look at yours, it's almost a match for your version 2 (current version I think, from the photos rather than the sketches) - though I'd probably not go quite as high for my lower cut out as I wouldn't necessarily be retaining the standard twin vertical exhaust outlet arrangement.

 

G

[JG]

oem twin exhaust essential

[Graeme Lambert]

oem twin exhaust essential

Really? I've never been fussed by the twin outlet James, always looks a bit awkward to me. And I was considering having a dummy outlet anyway (to potentially help with noise) so think a single simple round exit might look better. Either that or maybe stick with twin but horizontally aligned as suggested above

[Mopeytitan]

the first one looks really good tbh it has a far more appealing look than the rest and looks almost oem.

 

should choose that one G

[tommobot]

 

The first sketch looks very tasty! Similar to what I'm trying to do

 

Just had a proper look at yours, it's almost a match for your version 2 (current version I think, from the photos rather than the sketches) - though I'd probably not go quite as high for my lower cut out as I wouldn't necessarily be retaining the standard twin vertical exhaust outlet arrangement.

 

G

 

 

The only reason I went as high as I have is to make sure I would clear a larger backbox. I have a turbo backbox which only just fitted inside the standard heatsheild, and only that basis I didn't want any restriction on heat escaping without running with heatsheild

 

On the sketches were you've filled in the indent above the standard exhaust location, I'd have thought that would have melted or burnt, especially with the heat your putting out..  

[Graeme Lambert]

 

The first sketch looks very tasty! Similar to what I'm trying to do

  Just had a proper look at yours, it's almost a match for your version 2 (current version I think, from the photos rather than the sketches) - though I'd probably not go quite as high for my lower cut out as I wouldn't necessarily be retaining the standard twin vertical exhaust outlet arrangement.   G  

  The only reason I went as high as I have is to make sure I would clear a larger backbox. I have a turbo backbox which only just fitted inside the standard heatsheild, and only that basis I didn't want any restriction on heat escaping without running with heatsheild   On the sketches were you've filled in the indent above the standard exhaust location, I'd have thought that would have melted or burnt, especially with the heat your putting out..  

I'm no expert, but I'm hoping that wouldn't be too much of a problem. Nothing should be closer than OEM stuff I reckon

[oakmere]

Just line the rear clam with heat reflective material if removing the original exhaust heat shield to aid air flow. I have the material type attached with high temp glue from car builder solutions. This has survived the manifold temps which will be significantly higher than the back box. You also need the foil tape to stick over joins and edges.

[CocoPops]

Exhaust exit either side.... MUCH better for noise issues. Another reason why a lot of OEMs go for either side (and symmetrical reasons).

[Graeme Lambert]

Exhaust exit either side.... MUCH better for noise issues. Another reason why a lot of OEMs go for either side (and symmetrical reasons).

 

Only problem with that is it would require more fabrication though (in terms of exhaust) right Lee?

 

The single exit in the centre would only slightly differ from an OEM exhaust, and I thought a single exit would also help with our noise issues - as we go from two trumpet effects to one trumpet? (I'm kind of thinking out loud here)

 

G

[CocoPops]

Do it "once" do it right Graham?

[techieboy]

Be a damn sight easier to deal with only one exit when it comes to plug in/on db killers as well. Still don't understand what all the worry is though. There's enough engine bay cooling options already, without hacking chunks out of your clam. Unless you're planning on endurance racing, the engine bay temps really aren't going to be an issue and the chances are you, your supercharger IAT's or your tyres will be melting first.

[smiley]

There's enough engine bay cooling options already, without hacking chunks out of your clam.

 

One of the belgian guys made a bootlid raiser, and claimed a 10 to 20 degree drop in oil temp on track (spa)

 

 

 

 

 

50 years earlier.....

Edited by smiley, 11 February 2014 - 03:03 PM.

[Graeme Lambert]

Do it "once" do it right Graham?

 

Indeed, but if we're being pedantic it's Graeme

 

Be a damn sight easier to deal with only one exit when it comes to plug in/on db killers as well.

Still don't understand what all the worry is though. There's enough engine bay cooling options already, without hacking chunks out of your clam. Unless you're planning on endurance racing, the engine bay temps really aren't going to be an issue and the chances are you, your supercharger IAT's or your tyres will be melting first.

 

What are the options though? Suggestions of the extra NACA duct seemed to be poo-pooed by Winstar and the only other option I can see is to space the diffuser?

 

To be fair Matt B didn't think there'd be too much of an issue with heat either and I think before any clam is cut we'll be using temp stickers in and around the bay to monitor whats happening.

 

 

There's enough engine bay cooling options already, without hacking chunks out of your clam.

 

One of the belgian guys made a bootlid raiser, and claimed a 10 to 20 degree drop in oil temp on track (spa)

 

 

 

 

 

50 years earlier.....

 

 

We did similar with our Saab (front engined) track car previously which helped matters, though I think it may have just been masking an upcoming HG failure.

 

Still, would look a little weird with the Coupe conversion

[smiley]

 

Still, would look a little weird with the Coupe conversion

 

 

It could be interesting for the unfortunate ones who cannot do a coupe conversion, and don't want to hack into a 3500 euro clam.

[techieboy]

It could be interesting for the unfortunate ones who cannot do a coupe conversion, and don't want to hack into a 3500 euro clam.

 

Fixed that for you.

[Graeme Lambert]

Thanks to Mark (Mbes) here's some real-life images of a similar rear clam idea

 

 

I'd not cut quite so high (and I'd like to build a return lip so it looks a little more OEM) but it's a similar idea.

 

G

[Mopeytitan]

Thanks to Mark (Mbes) here's some real-life images of a similar rear clam idea

 

 

I'd not cut quite so high (and I'd like to build a return lip so it looks a little more OEM) but it's a similar idea.

 

G

 

As im not really one for cutouts i wuite like this to be honest. it has a slight appeal.

 

 

Not sure if its just because im focusing on the rest of the car though.

[TazN]

If I did that style cut out I'd be tempted to bring the bottom of the number plate recess up an inch as well. Would give the section between the plate recess and the cut out at the bottom some extra thickness.

 

Definitely see what the temps are like before screwing around with the clam unless you really don't like how it looks oem.

[rob999]

Saw this hunk a junk today

[Barton]

What did you take off it Rob?

 

That looks like an Apexi filter, might help myself to that, can you confirm if its a 65mm or 85mm spigot please Graeme?