Cameron02

I was looking for an exhaust housing I could use for a porting mod. Found this one from Japan on ebay at $156. I want to be able to return the car to stock so I wanted an extra housing. At that price its not a dissaster if I stuff it up. Anybosy see or know of any problems with this housing? http://www.ebay.com.au/itm/Turbine-Housing-Kinugawa-Garrett-GT35R-GT3540-GT3582R-T25-5-bolt-AR64-Turbo-/271127372392?pt=AU_Car_Parts_Accessories&hash=item3f20736268

Back on the subject of thermo fans. I took some measurements today and I dont think I will be able to fit one in. Also noted that my Monza cooler has a 20mm gap at the bottom (between the intercooler and radiator) but at the top has a 45mm gap. This is due to the oil cooler and oilcooler pipes being in the wayat the top. This is in my opion too big a gap and will make the radiators thermo fans pretty inefective at pulling air through the intercooler. To put it in perspective, the gap betweem the radiator and airconditioning condensor is 5mm. I guess I could relocate the oil cooler and move the intercooler back but I still dont think it will leave enough room for my craig davies thermo fan. Maybe there is another brand of thermo fan that has a lower profile?

Im pretty sure the tempreature of the water will make little difference. Its the heat energy required to turn water into vapour that really matters. I'd be interested to know why? Without evidence to the contrary, I agree. Although, maybe a finer mist will carry the water further into the intercooler fins, not sure. Ralph, I am just going to use a regular windscreen washer bottle and pump, connected to a couple of regular windscreen spray jets. This is what will trigger the spray. http://www.ebay.com.au/itm/Boost-Pressure-Switch-For-Turbo-Water-Injection-hobbs-/230910286499?pt=Motors_Car_Truck_Parts_Accessories&hash=item35c3535aa3

As far as middle muffler removal goes. You can do a search as plenty of people have done it. It will probably put your over the legal limit of 90dba so I would hang on to your old system if I was you. I have a completly sock system. With the centre muffler removed my car tested at 89dba and 93dba on deceleration due to gargle/poping sound.

I did search Thermo fans and intercooler and couldnt get more than one match. I have gauges on the way as well as threaded aluminium plugs for the temp sensors to go into the intercooler. I intend to have a sensor at intercooler inlet and outlet. Originally for the spray system, but I might try it with thermo fan as well. I have one in the garage that was left over from my cobra build, so it wont cost me anything. Agreed, its just the gap between the rad and intercooler that would (IMO) prevent the fans from pulling much air through the intercooler. However you have given me an idea. Maybe if I make a shroud for the intercooler that mates up to the rad it might increase performance. This one should be pretrty easy to test. I'll test these ideas once the gauge arrives. I understand my Monza is not the greatest cooler, but I want to be able to return my car to stock at any time. I dont really care which intercooler is the best. I just want to see if any intercooler can have its performance enhanced for bugger all $. that's just how I get my kicks. eg. my spray kit will cost me $57 which includes a boost switch. (although I already have the bottle and pump, so would have been about $140). The thermo fan will cost me nothing as I have it sitting there but thermo's can be had very cheap of ebay ($30). If it improves performance then surely its worth doing for so little spend.

Maybe. I think there is about 20mm between my rad and intercooler. Since I believe the air will travel the path of least resistance, I'm pretty sure the rad will pull most of the air from the 20mm on the edges rather than through all the intercooler fins. I was thinking that for most people a cooler on the front would be the only available option due to space constraints. Whilst I agree that it would block a small part of the cooler I think that it would be more than made up for by extra air being forced through. At least in a street application. In a track situation it would be (IMO) better without the fan as the car is always moving at speed. In my situation the upper part of the intercooler is blocked from direct airflow by the bumper etc anyway. If I can get the fan on the top half and keep the bottom half clear I might get the best of both worlds. Errrrr....serious? (just in case you are) the air would be cold but I dont think there would be enough of it and it would still need to be pushed through the fins, also the aircon being on might offset some of the powwer gains. Would be easy enough to test and see though.

Intercooler thermo fan......why not? This is my first turbo car, so I'm still learning about whats good and whats not. But it strikes me as odd that we dont have thermo fans on our intercoolers. Maybe some of us do? I have not seen anything on this forum about the topic other than a throw away comment under the Water spray thread. 1. Thermo fans work great on our radiators, so we know they work. 2. Once we hit 60kmh the natural air flow will probably do the job but below that thermo fans should reduce temps and ensure we have cooler air for launch at the lights or track. 3. I notice that quite a few 4x4 drivers are fitting a thermo fan to their intercoolers with great success (so they say). I guess their turbos are working hard but the car is moving too slow for natural air flow to do the job. 4. A thermo fan is cheap, especially when compared to a bigger intercooler. Or if you already have a massive intercooler, just make it more effective when idling? 5. I guess space would be a possible restriction? Pro's Con's any body? Am I missing something?

LOL M_Crisp Unfortunately the Turbo Coat from HPC only comes in black. So the girls wont be impressed. Maybe I could paint the car pink.

Yes BigAl, it would seem logical that the reduction in under bonnet temps would reduce heatsoak into the intake pipes. I'm guessing that the intake side of the turbo would be a fair bit cooler too since it is in such close proximity to the headers and turbo exhaust housing.

Interesting stuff. So if coating the headers and turbo housing will affect the gases in that way................would it need a retune afterwards?

150k, holy crap that's fast. Thanks for the warning Red

Thanks Red, I did not think of that. I guess that would be good advice for any turbo, not just a coated one? Do you know if they are able to coat the inside of the turbo or just the outside. Will coating the inside mess with tolerences? If they do coat the inside then the inside should cool down more quickly than standard. If they can only coat the outside then yes, the inside of the turbo would take longer to cool down.

I had the centre muffler refitted this morning. So the exhaust is now stock standard. Needless to say it passed the noise test. For those who are interested the results were: 3928 rpm 81dba deceleration 81 dba without the muffler the results were: 3928 rpm 89 dba deceleration 93 dba the legal limit is 90 dba Without the muffler the car was still much quieter than my AC cobra replica with 220kw xr8 motor. But my Cobra is under 90 dba. I think the issue with these cars might be that all the miose comes from a single point (exhaust). With a twin system the (exit both sides of the car) noise is split between 2 points so the microphone registers a lower reading. Where as a person standing behind the 2 cars would say the Cobra was way louder. Thank you to everbody for your input.

Thanks Ralph, I think I understand. If I dont put the exhaust housing back in the same position then the actuator attachment will not line up and neither will the dump pipe? Trying to understand what you mean about the spacers. What is the CHRA?

Down the track I would like to ceramic coat my headers, turbo and dump pipe to reduce engine bay heat and increase the life of engine bay components. I would need to pull the turbo apart so that I could send the exhaust side in for coating. Is there anything special I have to do when dismanting the turbo (only enough to get the exhaust side seperated)? For example do I have to mark fan/rod positions etc. Or is it pretty much pull it apart and clamp it back together again.

Thanks Henz

No worries Kosij, I have all the parts for the mod on order. I will fit most of them myself and then drive it to the tuners. Tuner rekons I should make it down there, although it will run like sh*t. On another note. Does the BA f6 typhoon have a larger twin system thean the BA XR6T?

Finally I get a lucky break. Just picked up a muffler ($70) from a guy on Gumtree. He lives about 2 mins up the road. That just never happens. Woo hoo! Now should I: A: Get the muffler fitted and have the noise test. Then go back and have the hi flow cat fitted? B: Get the muffler and hi flow cat fitted at the same time to save money. But will it pass?

Thanks Keddy, Awesome job Ralph. Thank you

Thank you

Thanks ratter, Any advice on how to make them fit. Do I simply run a 3 inch exit from the cat and split that into 2 x 2.5 inch? Is there enough room to do that?

Just got back from the tester. FAILED Legal limit is 90 dba Was 89 dba but 93 dba on deceleration. Also turns out I dont have a hi flow cat, its standard. The tester also tells me that the letter I have from the EPA is not the one they send out initally so it would seem it was issued against the previous owner. The car was advertised with "hi flow cat" but not the case. So im in the market for a used muffler. Also I need some advice. I want a high flow cat to support planned mods. I imagine aftermarket cats with twin outlets are non existant. I want to keep standard dump and 2 mufflers. With that in mind. What cat/pipe configuration would work best? At this stage I'm thinking I get the tester to fit the muffler, test it and then get the cat fitted, BA 2003 FPV intercooler planned mods are: valve springs 12 psi actuator CAI 2nd intake 60lb injectors fuel pump Hi flow cat tune

So ...in summing up...nobody knows the gear ratio's for the 5 speed :stink:

Mighty generous offer MiKa, Im just going to see how it goes first. Im curious to see what db it is putting out. Then I will do what I have to do to make it legal. I dont want to get pulled over all the time.

Warning: When I was younger heat wrap used to have asbestos in it (worked great). Of course no Australian manufacturer would use it now but just be carefull if you are importing it from a country where asbestos is still legal. On a lighter note. I had a 68 dodge I had a 440 rebuilt to magnum specs. The exhaust got so hot during running it that the plug leads caught fire. I had to get fire proof leads and wrap them with asbestos bandage (heat wrap). The fuel line was a good 40 cm from the exhaust but the fuel was vaporising in the lines. Took me a while to work that one out. Also I have an Ac Cobra replica with a 220kw xr8 motor. I had the headers coated inside and out by HPC. Also had the rest of the exhaust including the mufflers coated on the outside. It's awesome, reduces engine bay (and cockpit) heat quit a bit and the system never rusts. I don't drive the car a lot but have not had any issues with flaking or fading. I am considering using it on my Ba as I know it will help preserve the life of the other components in the engine bay.