Monday, 19 November 2018

Dave Wellings Workshop Note: Plus 4 GDI Heat Shield & Splash Guards

I've been thinking about doing this splash-guard thing for a while.


The over-rider brackets have four pre-drilled holes in exactly the right place to add a vertical aluminium plate, to partially blank off the engine bay. 



Here, two of the holes are visible to the left of the damper where the black dust shield and yellow body meet.




So starting with a cardboard template, using three of those holes, and rummaging through my stock of aluminium sheet, I went for 1.5mm thickness...................





I added edging, which finishes it off.......




And this is the result..................





Other side..............









Next the Exhaust manifold heat shield. I'd already applied 'Reflect-A-Cool' to the trunking. 


I made up a simple cardboard template which would just slot straight in......this is 2mm thickness.








Covered the back with 'Reflect-A-Cool'....





It fits using the two bolts I also use for my engine cover..........













I also added a small piece to the air filter housing.........






And that's it. Minimal cost and a good session in the garage.....

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Excellent. I have been advocating keeping the inlet temps down on the gdi this way for some years. 

Now, since you are handy with ally and tin snips the next thing to do is make a valance for the front. It,s very easy and quite satisfying to get it right. 

Better still junk the horrible restrictive standard cat and fit a free flow four-branch manifold and a 200 cell cat outside the engine bay. 

Finally a very wise move with any gdi engine is to run the pcv breather to a catch tank and then atmosphere - or just to atmosphere if you,re not too fastidious. Inlet valve fouling is now too well documented to ignore.


Valance and under tray are already sorted!



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