just took the car for a spin after removing the mesh from the front bumper.. HUGE difference in running temperature...

 

Had overheating problems today so flushed system and refilled (although this was done about 2 weeks ago by baggins so I doubt that was the cause...) also re-fitted smithy's stainless airflow guide thing and cut out the mesh from my '99 spec bumper (mesh was VERY fine with little diamond gaps about 2mm x 4mm)

 

car now runs about 15-20 degrees cooler!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

 

If I gave it a good run before I could easily make the water temp go over 100 degrees and have to slow right down till it cooled off a bit. couldnt make it go over 90 today even with a good 20 minute caning!

 

hopefully this is the end of my overheating problems... only time (and a REALLY hot day) will tell.

blimee running at 100 degrees is defo not good dude !! glad its dropped before you warped ur heads!!

indeed! :D

 

im guessing bugger all air was flowing through that nasty mesh. it also solved my low boost probs so it was almost certainly safty boost kicking in when sensing dettonation.

 

I think, once again, I have been a very lucky boy! :D

I did read somewhere (and cant for the life of me remember where) but it said that ANY mesh over the holes will stop all the air flowing into rads and intercoolers etc completely

 

It said it was almost OK at slow speeds, but at most speeds it would be like a solid barrier....

 

That said, most people have mesh, and many seem OK

 

so.... dunno why I bothered typing that all really, cos it dont help!! LOL

but what about the stones that come whizzing through and could potentially but a hole in ur rad or intercooler !! especially expensive if the are aftermarket parts!! u just have to weigh up the pros and cons really .

got stock ICs and the 99 spec front end the holes dont exactly line up properly with them anyway (anybody else noticed this?) the horn is mor visible than the IC.

 

and its the oil coolers on show though the central hole, I have a very large autobox cooler which is going to be a bit vulnerable, slightly worried about this....

 

replacing ICs will just be a pain as Im sure I can source stock ones for next to nothing...

 

my mesh was so bad though it was going to be a cooked engine so I think I have done the right thing..

I've just had a 99-spec front bumper & it came with the mesh, so Nissan obviously don't see it as being a problem

I've just had a 99-spec front bumper & it came with the mesh, so Nissan obviously don't see it as being a problem

 

To be honest it could be another fault on the car that is causing it to over heat and the mesh is not helping!. Who knows with the age of our cars eh.

 

I doubt Nissan would let it out of the factory with mesh if it causes over heating.

mesh was VERY fine with little diamond gaps about 2mm x 4mm

 

I've got mesh on my 99 front and no cooling probs at all. From what you've said, it sounds like the size of your mesh may have been too restrictive. However, I've seen fairly fine mesh on Zeds with no reported problems (eg: Paul C)

 

Still a possibility that there was an airlock in the cooling system somewhere before you flushed it again. I've had this a couple of times even though I've been very careful with bleeding and topping up...

 

Steve :)

Im pretty certain the mesh that was fitted to my bumper by the body shop is not the same stuff supplied by nissan.... looking at the pics of craig davids genunine 99 spec mesh the gaps a MUCH larger than the mesh that was on mine. also if im not mistaken from the pics the IC's dont have mesh in front of them at all?!?!?!