DIY_EFI Digest Monday, September 20 1999 Volume 04 : Number 535 In this issue: Re: TPI to Vortec conversion Re: DIY_EFI Digest V4 #531 Re: TPI to Vortec conversion Vss on 165 ecm help! Real time OS for Linux Re: DIY_EFI Digest V4 #534 Trying to switch to non-digest WON'T WORK See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- Date: Mon, 20 Sep 1999 06:59:25 -0400 From: Shannen Durphey Subject: Re: TPI to Vortec conversion > Date: Sun, 19 Sep 1999 18:06:23 -0700 > From: "Bob Groger" > Subject: TPI to Vortec conversion > > Does anyone have any insight into putting a 87-up TPI manifold on the L31 > Vortec heads? Seems like the best deal around at $400\pair complete. I have > heard the ports are raised .100, and the bolt holes are now vertical. Can it > be done with minimal work? > > Bob Groger > TPI 350\Mercedes SEL Project It's probably not a good match. The raised ports of the heads make it difficult to find manifolds which seal along the top. Then the bolt holes for the intake are at a different location, and drilling and tapping the heads puts the manifold end bolts in some very thin material. I have a set of these heads on a 67 Chevelle, and the options that I think are viable are LT1 or LT4 intake, with modifications for coolant to pass through the front of the intake, or Edelbrock or Holley intake. Holley sells an intake manifold with port injectors installed. Here's the picture. http://www.holley.com/HiOctn/ProdLine/AV/FMS/FMSFI/99-150.html It would be nice to match these manifolds to a long runner intake. The tpi cars have gobs of torque compared to the LT1 versions. But then again, when ya use rpm to gain hp, that's the trade you make. I looked up that Holley system, here's the price I found: http://store.summitracing.com/express.asp?ssid=7BV6M46XYKRL6BINJKEBQWOONJ&vendor=hly&sku=99-150 Shannen ------------------------------ Date: Mon, 20 Sep 1999 08:23:35 -0400 (EDT) From: Pat Ford Subject: Re: DIY_EFI Digest V4 #531 the problem is if liquid water hits the sensor the element inside can shatter ( remember also that there is a passage to the outside from the element) Previously, you (DIY_EFI Digest) wrote: { { > > I recently read some messages claiming O2 sensors could be damaged by { > > water in the exhaust stream. Is this true? Would it have to be liquid { > > water, or would steam be a problem? I'm contemplating substantial water { > { { Water is a byproduct of combustion and inherently will be in the exhaust gas. { Perhaps what was being referred to was engine coolant, not water, which could { damage the sensor. { { Bill Edgeworth - -- Pat Ford email: pford@xxx.com QNX Software Systems, Ltd. WWW: http://www.qnx.com (613) 591-0931 (voice) mail: 175 Terrence Matthews (613) 591-3579 (fax) Kanata, Ontario, Canada K2M 1W8 ------------------------------ Date: Mon, 20 Sep 1999 10:03:36 -0400 From: Ernst denBroeder Subject: Re: TPI to Vortec conversion > > Does anyone have any insight into putting a 87-up TPI manifold on the L31 > Vortec heads? Seems like the best deal around at $400\pair complete. I have > heard the ports are raised .100, and the bolt holes are now vertical. Can it > be done with minimal work? > > Bob Groger > TPI 350\Mercedes SEL Project Bob, These heads will and do work with the TPI intakes. All you need to do is drill and tap some bolt holes in each head. I follow the conversations on www.thirdgen.org (for Firebird, Camaro owners) and there are lots of people there with first hand experience with this conversion. I remember reading once on that site that there is a company that sells modified Vortec heads for TPI applications... but you'll have to ask around on that site because I don't remember the name of the company. Hope that helps you some. Ernst denBroeder ------------------------------ Date: Mon, 20 Sep 1999 10:42:20 -0400 From: Mike Rolica Subject: Vss on 165 ecm help! I have one last thing to solve on my tpi s10 project. I have a mech operated speedo and the prom is for 89 firebird 350 tpi (apyu) It has one wire -Brown for the vss. With the ign on I have 13v nothing connected. I've tried the optical type but most I find are bunt out and I believe they are only dc pulse. What do I need to send to the ecm? What is it looking for in detail. I have and inline gen. used on my 84 jeep grand wagoneer. On my fluke meter it reads 4v ac. how can I make this work? And I am sure I will shoot someone if they start telling me to modify the code of go buy something from JTR. ;-) thanks, Mike R ------------------------------ Date: Tue, 21 Sep 1999 01:28:04 +1000 From: Phil Lamovie Subject: Real time OS for Linux Here's one that may appeal to the laptop ECU movement. Here's the short... Last year, Cygnus Solutions unveiled a new initiative called eCos (embedded Cygnus operating system). eCos is available as both open source and royalty free. Today, eCos has been downloaded by well over 10,000 developers. Why didn't Cygnus choose Linux as its open-source real-time alternative? This article will compare and contrast these two alternatives and explain why each can have a place in your real-time solution. Here's the long. http://207.178.22.52/lj-issues/issue66/3576.html Phil Injec Racing ------------------------------ Date: Mon, 20 Sep 1999 13:11:12 +0100 From: "Rich Mauruschat" Subject: Re: DIY_EFI Digest V4 #534 >DIY_EFI Digest Monday, September 20 1999 Volume 04 : Number 534 >Date: Sun, 19 Sep 1999 20:21:27 +0100 >From: "Alan Smith" >Subject: Motronic 1.5 chip help wanted >If anybody has any M1.5 bin files I'd appreciate a copy to look at. Alan, I have a couple of eprom images, one is for SRi (130hp 20SEH engine), the other I think is for the 115hp 20NE engine. Any help? Rich ------------------------------ Date: Mon, 20 Sep 1999 10:15:43 -0700 (PDT) From: Orin Eman Subject: Trying to switch to non-digest WON'T WORK I've been getting a few requests for addresses that are on the digest. Everyone is on the digest at the moment. Requests to diy_efi are automatically converted to diy_efi-digest. This is to save load on the server and unless someone offers us free bandwidth to relay the mail, it will stay that way. Orin, list admin. ------------------------------ End of DIY_EFI Digest V4 #535 ***************************** To subscribe to DIY_EFI-Digest, send the command: subscribe diy_efi-digest in the body of a message to "Majordomo@xxx. A non-digest (direct mail) version of this list is also available; to subscribe to that instead, replace "diy_efi-digest" in the command above with "diy_efi".