Badfrog Posted February 7, 2009 Report Share Posted February 7, 2009 Hi BadfrogThe other mod for when it is really hot linked to elec fan pic before fitting in the tube Cheers Neil Now that would make Guy de Lombard speechless. Cheers, Quote Link to post Share on other sites
angelfj Posted February 7, 2009 Report Share Posted February 7, 2009 (edited) All, I'm sure the purists will hate it but I love the look and spec of this car: http://www.royal-falcon.de/Fahrzeugangebot...4_A_IRS_.html#5 Anyone else removed their bumpers? Anyway, my real question is, are those side grille vents specially made? Are they cut into your own existing panels, or is this a remanufactured wing thing? John CAUTION - PERHAPS UNRELATED, BUT THIS LINK JUST COMPLETELY LOCKED UP MY COMPUTER - REQUIRING A RE-BOOT. Edited February 7, 2009 by angelfj Quote Link to post Share on other sites
stuart Posted February 7, 2009 Report Share Posted February 7, 2009 CAUTION - PERHAPS UNRELATED, BUT THIS LINK JUST COMPLETELY LOCKED UP MY COMPUTER - REQUIRING A RE-BOOT. Frank that must be your end as no problem here. Maybe your new administration has their eye on you! Stuart. Quote Link to post Share on other sites
Badfrog Posted February 7, 2009 Report Share Posted February 7, 2009 No problem with the link either. The complete set of photos shows an interesting lateral view: The vent is oversized. Nothing to do with the original VC's vent or the replica made by Revington. I must add that it is totally disproportionate in my view. Of course anybody has the right to do whatever he wants with personal property. Nevertheless, I dub it a "don't" in function AND aesthetics. Bumper removal has one advantage : just weight the removed parts. It also has one main drawback: explain to the local force that it's not legal but "tolerated". Then pay the fine. Ask me how I know..... Cheers, Quote Link to post Share on other sites
stuart Posted February 7, 2009 Report Share Posted February 7, 2009 (edited) It also has one main drawback: explain to the local force that it's not legal but "tolerated". Then pay the fine. Ask me how I know..... Cheers,[/quote Thats a cheek considering every car today has no effective bumpers! Stuart Edited February 7, 2009 by stuart Quote Link to post Share on other sites
Graham Robson Posted February 8, 2009 Report Share Posted February 8, 2009 Am I allowed to call myself the 'horse's mouth' regarding front wing vents ? I hope so, because they first appeared on 'works' TR4 rally cars when I was administering the team. ** They most certainly did work, and very well too - but you must remember that 'works' rally cars always ran with big sump shields in place (absolutely full-length shields for the Liege, RAC and, I think, Shell 4000 rallies) to preserve the sumps on rough roads. These, naturally, made a lot of difference to the air flow under the bonnet. ** The profile of those vents was self determining - look in the engine bay and see where other panels, inner wheelarches, etc, line up. ** The chrome grilles were, indeed, cut down from the Herald grille of the period. GRAHAM ROBSON Quote Link to post Share on other sites
Badfrog Posted February 8, 2009 Report Share Posted February 8, 2009 (edited) Am I allowed to call myself the 'horse's mouth' regarding front wing vents ? I hope so, because they first appeared on 'works' TR4 rally cars when I was administering the team.** They most certainly did work, and very well too - but you must remember that 'works' rally cars always ran with big sump shields in place (absolutely full-length shields for the Liege, RAC and, I think, Shell 4000 rallies) to preserve the sumps on rough roads. These, naturally, made a lot of difference to the air flow under the bonnet. GRAHAM ROBSON Graham, I think you've given us the true secret of it: the full-length undershields. Without these, no scoop effect, no positive air pressure in the bay and the surface depression on the wing is the only force at work. Thus aspiration from the grille sucks up air in the vicinity of the carbs as there is no positive pressure to take advantage of. With the shield, hot air from the bay is not aspirated but naturally forced out by positive pressure and the carbs are not disturbed. Certainly explain why the test I read about was negative. The car was plain standard without any shield. So, if you want the system to work, you need both. Side vents alone are meaningless, just like big carbs without an adapted camshaft and distribution. Cheers, Edited February 8, 2009 by Badfrog Quote Link to post Share on other sites
North London Mike Posted February 8, 2009 Report Share Posted February 8, 2009 Graham, I think you've given us the true secret of it: the full-length undershields. Without these, no scoop effect, no positive air pressure in the bay and the surface depression on the wing is the only force at work. Thus aspiration from the grille sucks up air in the vicinity of the carbs as there is no positive pressure to take advantage of. With the shield, hot air from the bay is not aspirated but naturally forced out by positive pressure and the carbs are not disturbed. Certainly explain why the test I read about was negative. The car was plain standard without any shield. So, if you want the system to work, you need both. Side vents alone are meaningless, just like big carbs without an adapted camshaft and distribution. Cheers, Badfrog/ Graham Graham: Thank you for confiirming my own experience, they work! Badfrog: My apologies, in our earlier wing vent debate I think I forgot to mention that, as my car is a pretty faithful works rep, I have a works style full undertray (which explains why the vents work on my car) This photo just shows the leading edge of the shield and the tow eye. As you can see it closes off the underbelly from just below the rad, full width to the chassis rails and past the sump! Quote Link to post Share on other sites
Herald948 Posted February 9, 2009 Report Share Posted February 9, 2009 I don't think that these are the correct grilles if that's whats being attempted .......(Sorry I'm late entering into all this. ) Correct, Tony. The grille here appears to be from the original Spitfire 4 or possibly the Vitesse 6 (same mesh; different size grilles). Quote Link to post Share on other sites
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.