mckibben23 Posted March 15, 2021 Share Posted March 15, 2021 Hi this is a 1997 300TDI in a 1983 110. Is this a concern that the fan is without a cowl and if so, how should this be addressed or solved? thanks in advance. D Quote Link to comment Share on other sites More sharing options...
Falklandislander2003 Posted March 15, 2021 Share Posted March 15, 2021 mines without a cowl but mines a disco 200 tdi in a 1990 110 don't know if that makes any difference Quote Link to comment Share on other sites More sharing options...
Retroanaconda Posted March 15, 2021 Share Posted March 15, 2021 The fan won’t be effective without a cowl I’m afraid. If the engine has been fitted in the standard 300Tdi position then a 300Tdi cowl would fit, however it looks from the photo to be much further back and so I suspect you’ll be into a custom-made arrangement. A lot of folk people don’t bother and fit electric fans as a workaround. Quote Link to comment Share on other sites More sharing options...
mckibben23 Posted March 15, 2021 Author Share Posted March 15, 2021 thanks folks. Quote Link to comment Share on other sites More sharing options...
Retroanaconda Posted March 15, 2021 Share Posted March 15, 2021 You’re welcome. Any pics of the whole car? Quote Link to comment Share on other sites More sharing options...
mckibben23 Posted March 15, 2021 Author Share Posted March 15, 2021 yes but i'm in the process of buying it... will share later! Quote Link to comment Share on other sites More sharing options...
Sigi_H Posted March 16, 2021 Share Posted March 16, 2021 Best is to remove the visco fan completely and put an electric fan (or two) on the watercooler and intercooler. The intercooler is often forgotten, when rebuilding to el. fan. Result: More fuel efficiency (i had minus 0.2l - 0.3 l) and quieter. 1 Quote Link to comment Share on other sites More sharing options...
Troll Hunter Posted March 17, 2021 Share Posted March 17, 2021 I've reallocated my now redundant A/C condenser fans as follows. Both are "pusher" fans. One is dedicated full time to cooling the intercooler. This is powered only when ignition is ON. Although this might seem unnecessary, if you are in low gear/slow speed for a considerable time, perhaps even winching, there is virtually no air thrust through the radiator and intercooler. so this is a benefit. The other is a first-on radiator cooler, switched by coolant temperature, followed at a higher coolant temperature by a major electric fan. This larger fan is a "puller" fan. These two fans are powered by an "Always ON" power supply from the starter, since on engine shut down the residual block heat can give high coolant temperatures, if engine shutdown occurs before a period of cooling the engine down at relatively low RPM. These fans could be protected from a faulty long run time by an in-line timer switch/relay. I'm making custom ducting so that both fan set-ups have custom ducting to concentrate air flow through the relevant cooling cores. Mike 1 Quote Link to comment Share on other sites More sharing options...
Sigi_H Posted March 17, 2021 Share Posted March 17, 2021 always on fan at the intercooler is a good idea Quote Link to comment Share on other sites More sharing options...
miketomcat Posted March 18, 2021 Share Posted March 18, 2021 When I did a 200tdi conversion a few years ago I found a TD cowl turned upside down and trimmed for pipework fitted perfectly so it might be worth measuring a few cowls. Failing that as has been said just go electric. Mike Quote Link to comment Share on other sites More sharing options...
Troll Hunter Posted March 18, 2021 Share Posted March 18, 2021 Even going electric you still need to have a cowl, or some sort of ducting to ensure that air is not by-passing the radiator. My main fan is sealed to the radiator core with draught excluder self-adhesive tape. Similarly for the two small fans, which are both pushers. If the fans are not sealed the air flow will dissipate and go around the radiator, or even just return to the fan inlet. Neither option helps your cooling. Mike Quote Link to comment Share on other sites More sharing options...
Sigi_H Posted March 19, 2021 Share Posted March 19, 2021 20 hours ago, Troll Hunter said: Even going electric you still need to have a cowl No, just mount the fan directly with cable ties on the radiator core. Works perfectly and is done even in racecars. Quote Link to comment Share on other sites More sharing options...
Troll Hunter Posted March 20, 2021 Share Posted March 20, 2021 Agree, if you can do it. It's very difficult to mount a circular fan body to a rectangular radiator matrix unless the circular fan body is larger than the radiator. Be interesting to try on a Defender radiator without modifying the bonnet. My point is that whatever dimensions and fittings, you have to minimise radiator by-passing and fan recirculation. Mike Quote Link to comment Share on other sites More sharing options...
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