Subject	AshSPEC Turbo Inlet Pipes, V2, full 2.5"
Posted by	Ash's Z on March 07, 2011 at 7:17 PM
	This message has been viewed 1171 times.
Message	Big thanks to Brett Dempsey for sending us a set of his engine mounts so we could entertain the idea of using full 2.5" to the compressor inlet. Thanks Brett! With these engine mounts there is a ton of room around the turbo compressor inlets. The first version I built last week had to use 2.25" through two bends in order to fit between the manifold heat shields and engine mounts. With these new mounts, 2.5" tubing fits beautifully - no cheated cuts in the tubing either - the welds you see in each joins square cuts in the tubing - doesn't get any better than that. In addition to this, since we no longer have to expand out to a 2.5" tube there is only one weld in the tubing. The previous inlet pipes had two welds. ....and this size tubing we can bend in house all day long. :) Forgive the unfinished appearance of these pipes - these are just prototypes built solely for testing purposes. One issue to work out is the fact that the flange on the turbos is only 2.1" i.d. and the gasket face isn't very wide. When I machined the flanges I had to cut a 2.5" seat in the front face to fit the tube but leave a 2.1" i.d. so there would be ample sealing face. There is a step half-way through the thickness of the flange which is pretty gnarly. I have some 1/2" 6061 plate that I will be cutting new flanges from that will allow me to cut a taper from 2.37" (i.d. of the 2.5" tube) to an i.d. of 2.1" to match the inlet diameter of the compressor housing. This will improve the flow a good bit. It is a shame that all of the aftermarket turbos people are using have a modified inlet flange that retains the stock i.d.. Looks like new turbo compressor flanges need to be made available for those who haven't installed the turbos yet. I dont have flowdata on these new inlets just yet - it is bike week down here and just happens that the flowbench is owned by a biker. In the mean time I'll put together accordion section and the lead pipe section that runs under the headlamps so we can get some numbers on a complete 2.5" system. I'll also machine out the taper flanges and get them welded up. Will post data once I've got it. Enthusiasts soon understand each other. --W. Irving. Are you an enthusiast? If you are out to describe the truth, leave elegance to the tailor. Albert Einstein
Follow Ups	AshSPEC Turbo Inlet Pipes, V2, full 2.5" - Ash's Z 19:17:50 03/07/11 looking good! looking foward to seeing the full induction - KongZTT GT28RS MD 19:32:03 03/07/11 2nd that! (n/m) - XTZ 19:35:21 03/07/11 3rd (n/m) - Zarcasm(Hfd, CT) 20:27:55 03/07/11 how does your exhaust mani sit compared to msp? (n/m) - BoneZ 19:32:28 03/07/11 For the time being I am using the OEM pipes to judge - Ash's Z 20:05:41 03/07/11 Cool. I'd bet they would fit (Thought you were using yours) - BoneZ 20:49:41 03/07/11 Very nice. I would buy Motor mounts from Brett - Boosted1 19:44:48 03/07/11 i would rather see a product "bolt on" - blackomega 23:00:55 03/07/11 You would be better off pulling the motor to replace - KongZTT GT28RS MD 00:57:03 03/08/11 no, i would not be better off doing that. (n/m) - blackomega 07:06:09 03/08/11 I meant.. the hassle to try to replace inlets with motor - KongZTT GT28RS MD 12:12:51 03/08/11 AGREED. We may end up with two versions of these pipes. - Ash's Z 09:09:08 03/08/11 Way to come back to the R&D game, Ash! Keep it up! (n/m) - TheTwinZ (Peru) 21:22:57 03/07/11 still think you should have done turbos on bikes ... (n/m) - The Devils Z 21:36:24 03/07/11 Flanges? psch (n/m) - ZiNnYc 22:59:20 03/07/11 Looks great.....sorry for recent email now..... - zdoc 06:45:35 03/08/11 Thanks Ash. (n/m) - Cuis-Z 08:03:35 03/08/11 Looking good - RobZ32 10:34:38 03/08/11 cool (n/m) - dpjax 13:32:58 03/08/11
Post a Followup	You cannot reply to this message because you are not logged in.