mgf exhaust heat shields

[mgtfnut]

Would the extra heat help the thermostat open sooner and contribute to a more even balance of coolant temperature?

I think this is a dubious plan If the exhaust can give enough radiant heat to the coolant via the top hose, then your hose won't last long!!

Better I think to protect the hose, make sure the thermostat is working ok, and just remember that the K series engine has a very small volume of coolant to heat up from cold before the thermostat opens.

Further then this is a whole different can of worms

[bgunn]

No, because the thermostat is opened by the wax bulb that's in the water stream, not from radiated heat outside of the cooling system.

I wouldn't want to run an MGF/TF without at least the engine bay shields - I've seen alternators fry and take out the ENTIRE electrical system due to overheating

[RichardK]

It's not a plan - just a ponderance. Heat would heat up the water in the pipe on t'other side of the thermostat.

I want shields on mine. I have the alternator side and I'm missing the coolant pipe side, which seems to be readily available used - but I need to know what else I might need other than the shield!

[mgtfnut]

It's not a plan - just a ponderance. Heat would heat up the water in the pipe on t'other side of the thermostat.

I want shields on mine. I have the alternator side and I'm missing the coolant pipe side, which seems to be readily available used - but I need to know what else I might need other than the shield!

Think of it this way: the top hose you might want to heat up is the the hottest external part of the coolant system, and it wants to cool down, not heat up as it returns to the water pump. This hose will fry slowly if not protected from the manifold radiated heat.

The TF heat shield from a scrappy will be fine

[Rob Bell]

The hoses are particularly prone to excessive radiant heat and can quickly harden and split - think I recall yours splitting on the A30/303 Rob? Mine did as well soon after I got the car minus heat shield.

You're right, it did. But if I recall correctly, this was when I still had the heat shields... but I do need to get around to re-fitting them!

[RichardK]

I'm sure any given heat shield will be fine - but I don't actually know where it attached, having never had one!

There's one on eBay, a new one, it's cheap, I just don't know if I need more parts. That's all I want to know - if there's the equivalent of the alternator shield bracket and I'm missing it. There aren't many scrappies around here, and few allow you to look at the car when you're taking it apart.

[Rob Bell]

I blame the EU and Health and Safety for the demise of the Great British Scrap Yard...

IIRC, the brackets should all be there on the block - I'll have a look at a car when I get home and let you know.

[redarrow]

This will help you, complete your car protection, off Shields/covers.


If you get all below, i promise you will not have, no engine (water) problems.
my opinion. ((i done ever think below so far very happy)).

I no it a lot, but will protect your engine and car parts,the best bit is your car will be rust free problems, hopefully.(don't forget to get rid off any current rust and spray/paint rust free...

quick a set
Left coolant pipe protector, and right alternator protector.
http://cgi.ebay.co.uk/MGF-Heat-shield-s ... 2561e43e0e

After getting the left and right heat shield, get this,
to protect the coil pack from water this helps.

(It for the tf but it fits the f also, take the temp brown censor off, put lid on
it fits below sensor but needs to be off before fitting.(pipe reason your see)
http://cgi.ebay.co.uk/MGF-MG-TF-MANIFOL ... 3a60e69212

You need this, as-well will help.
http://cgi.ebay.co.uk/Rover-25-45-75-ZR ... 19c3d60c5a

There one more heat shield to get, it protects the alternator,it gets connected via the
alternator wheel side, you can make one.
......
there a tutorial how to create a alternator cover here we go.
http://www.mgboard.de/viewtopic.php?f=2&t=5119

Your have every thing then protected. just protect all the wires going to the ecu at the back, Vaseline them to stop water. your done.

[Rob Bell]

There one more heat shield to get, it protects the alternator,it gets connected via the
alternator wheel side, you can make one.
......
there a tutorial how to create a alternator cover here we go.
http://www.mgboard.de/viewtopic.php?f=2&t=5119

Your have every thing then protected. just protect all the wires going to the ecu at the back, Vaseline them to stop water. your done.

Nice post!

Particularly like that DIY alternator cover, great find! Need altavista translator though!

Richard, as it happens, I found that manky old original alternator cover - I hadn't actually chucked it out yet (I'm such and automotive Womble ). Yours if you want it.

[RichardK]

Rob - the inner arch one, for the belts? That'd be awesome if you've got that, I haven't seen any on eBay!

Now I just need to figure out the coolant heatshield, I've seen one or two on eBay but unlike the alternator one, where I can see how it attaches around the manifold, I can't see how the coolant pipe side heat shield attaches - if there's a bracket, or if it's on the bulkhead rather than the block, or shares bolts with the exhaust studs. Oddly even looking at EPCs I haven't spotted the answer!

And my droplinks were pointed out to me today - the postie had hidden them in a garden tap box!

[Rob Bell]

Yes, the inner wheel arch one. It's a bit baggy, but it'll do the job you need it to perform

The heat shields are mounted off brackets on the block IIRC - I had to 'modify' them with a lump hammer when fitting a 4-2-1 manifold to Project Shed...

[RichardK]

Heheh, that's a proper mod!

I have no brackets that I can see, so I'll need to track those down. Maybe when I've got the manifold fitted.

[Rob Bell]

I'll see whether I can take some photos - but they're going to look a little, er, how shall I put it? "Relieved".