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I've also been talking to a mate about under bonnet heat and after much chatting I'm going to need to vent the heat..

I was going to just lift the back of the bonnet and hope for the best ..but we put a model mk3 in a theoretical wind tunnel and the best place to draw heat out of the engine....like most cars is in the front half of the bonnet.....and I want to do that before I paint it...

wasn't really wanting to cut holes in a mk3 bonnet...but this car will never not have a turbo motor in it ....so may as well.

after looking and marking it out on the underside for room for vents... there are 2 basic areas.... marked with stars..... and I'm probably going with where the big star is.... same area I did on the other mk3.20221209_162858.thumb.jpg.bfa9669f10c2abb3c60a52feaf5614bb.jpg

I have a plan though 

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I had a look at the rear valance today ( I had a feeling it was bad ...as they all rust).

I stripped it back to bare metal ( if that's what you could call it..... and I didn't even get a pic).. it was full off shifty rust repairs and dents...

I did look at palms ideas for a new valance but at over 500 bucks I realized a new valance wasn't on the cards for this old girl......(not yet anyway).... I wasn't to keen on cutting it all out and making it..... so I did the next best thing.......

     bogged the shut out of it and sanded it back with the orbital sander and primed it........ fucking done.

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will I had the bog in hand I did a few little spots I had found... 2 on the roof and on the driver's Rea 1/4.

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and also the petrol flap and radiator mounts.

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so that's everything that's going bogy colour done.... just have to resend it all with some 400 and fix anything i find.

 

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ok  so on the bonnet vent situation..

I have set of cheap steel Rendon vents on the way 200x115mm...... not sureScreenshot_20221211_150657_Chrome.jpg.e2325e38a025c37a8e5017b116ae362c.jpg

I also liked the look of the audi sport quattro front vents ... and in the same sort of place... but hard to find and expensive. 

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and the lancia delta integrale..... just the front one... but again expensive and hard to find. 

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then I looked at the cosworth, escort ..to rounded .. the sierra cosworth almost ..... and then I found them... sierra cosworth rs500...    down side won't be here till and of January..   I am hoping he can send me a template of the hole so I can al least cut that and still paint the bonnet....

but might just have to paint that layer on....maybe.

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  • 2 weeks later...

back to my old black mk3...

I got everything sanded back 320 then 400 and finally 600.

pulled all the masking off the shell and blow it out ..cleaned the garage and re masked the car back up...

turned the garage into a bit of a booth to try and keep dust down and overspray of everything. 

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  • 3 weeks later...
  • 1 year later...
  • 5 months later...
  • 1 month later...

Also made a base i can run motors on.. so once I have a motor running on it (no way to load the motor up ..but can get them up to temp).

I'll slap the SC setup on and see if I can make it work 

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  • 4 weeks later...

I going to steel some bits of my mk3 motor .

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So i thought I would pull it down and see what its like.. I mean this motor has done well as it wasba standard motor I pulled down , checked and cleaned and the put it back together with the rings and bearings that came out of it.... it was only ever ment to be a test motor to see if the whole setup would actually work and it does and pretty well... just added a set of ARP head studs.

 

Dosnt look bad for a motor I was learning to tune with  and had done about 2000ks and started at 5psi and ended up at 17psi before I pulled it out.

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But this motor isn't going back in..

Now I know the setup can work its getting some changes... and a motor more suited to running some boost

Cheers

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  • 3 weeks later...

So this car is on the back burner now while I work out all the upgrades I want to do before cert.

I pulled the motor out and stripped it all down (the long block is going to be a test motor for me now)...the rest of the parts filled the boot 😆 

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Some of the big upgrades planned are.

*fully built motor ( forged rods,cossy pistons ,oil squirters, big valve and fully ported head ,kenneally cams turbo cam ,evo 9 turbo.

*ecu upgrades (going maxxecu this time around). 1 dash for everything 

*bigger fuel tank

*better front brakes 

*transmission upgrades (something I've been dreaming of for a year or so now.....just need to get my grubby little hands on one)

*and DBW.

The DBW was something I've been thinking about for a while now and I run nissan GTIR ITBs on this motor and I wanted to keep them...(pain in the arse to tune....but love the response).

DBW ITB actuators are bloody expensive even 2nd hand BMW ones... and I'm not a cheap cunt but I also don't have shit loads of disposable income......so I have a tendency to just try and make shit work. ..and I have my time to try and figure it out

So I wondered if I could just convert an actual DBW throttle to control them.

I looked at so many (different motors,motor orientation, size of the motor, size of the throttle body, blue location...

Ended up going for a 2nd hand BMW 3 series one. $35

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So I have a complete GTIR inlet that I have been running and a couple of sets of parts...including a set I used to mock the inlet up on the pinto in the 1st place ....thats didn't have the top throttle linkage where the accelerator cable goes to (percent for what I'm about to do)

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So 1st thing was to cut the IAC setup  of the ITBs (for room na dthe DBW will now do IAC )and cut the throttle body up aswel.

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I also cut a section out of the plenbase side of the inlet manifold so I can run  a arm through there

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Then all I did was cut a 4mm plate of steel and bolt it  to some. Holes on the underside of the inlet...

Then welded some captive studs for the throttle body.

Found 2 arms the same size to link the 2 sets of of ITBs together with the actuator arm (so the move both together) ..I also left the full open stop on one end (with the return spring) and the full closed atop on the other end..

I then used an arm the same size as the other 2 and drilled it to fit the TB shaft and welded it where I needed it .

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Was a pain in the ass to make sure it cleared oil cooler,engine mount,block breather) and I could get to the plug.

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Butall fits and gets full open and full closed. 

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Bloody happy with that.... $35 DBW ITs.... hopefully it works 😆 

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