Rotary Development

NoDOHC · 10-30-2009, 09:11 PM

Ok, I know this section sees very little use, but I am torn between several paths, so I decided to make a poll.

I have rebuilt or been involved in rebuilding several rotary engines and am not at all afraid to modify them extensively.

I have a pair of lightened, polished, and soon to be balanced, 9.5:1 CR rotors.

I also have S5 planetaries and soon-to-be-balanced rotating assembly. I am debating what to do with it.

I also have a Haltech e6x ECU in a rust-free '86 GXL (no one ever claimed that the paint was good) that is my test bed for new engines. It has turbo drivetrain in decent condition.

The car currently has an '88 four-port engine in it with 10,200 miles on polished 8.2:1 CR rotors. It has a blueprinted stock manifold on it. I believe that my ignition is costing me about 30 WHp (It should make about 250 WHp).

I like doing development. In fact, it was the love of developing new or better products that got me into engineering in the first place.

I have a very long and otherwise boring Wisconsin winter ahead of me and I am looking for a project that keeps me in the heated garage. Because I spent all last winter building small block chevys, I figured that I would devote this winter to rotaries.

Here are the options for the winter:
Leave the engine block alone and strap a GT37 VGT on it - Shoot for 500 WHP @ 14.5psi
Leave the engine block alone and strap a pair of twin turbos on it - Shoot for 450 WHp @ 14.5 psi
Take the engine out, set it aside and build a semi-PP out of an old 6-port block - Shoot for 250 WHp > 30 MPG and 1,000 rpm idle
Take the engine out, set it aside and replace it with a built-streetported 6-port - Shoot for 200 WHp NA
Take the engine out, tear it down and install the balanced, high compression assembly, build a custom intake, install Yukon coils and E8 ECU - Shoot for 300 WHp, streetported NA

EDIT:

I am mostly interested in which of these would be most useful to the community at the moment. I will probably do all of them eventually.

Complicated is not an issue at all. I intend for this to take all winter.

View Poll Results: What to do over the winter?
GT37	0	0%
TT	2	22.22%
Semi-PP	2	22.22%
6-port	0	0%
4-port	5	55.56%
Voters: 9. You may not vote on this poll

10-30-2009, 09:11 PM	#1
NoDOHC The quest for more torque Join Date: Sep 2008 Location: Sheboygan, Wisconsin Posts: 855 Rep Power: 17	Rotary Development Ok, I know this section sees very little use, but I am torn between several paths, so I decided to make a poll. I have rebuilt or been involved in rebuilding several rotary engines and am not at all afraid to modify them extensively. I have a pair of lightened, polished, and soon to be balanced, 9.5:1 CR rotors. I also have S5 planetaries and soon-to-be-balanced rotating assembly. I am debating what to do with it. I also have a Haltech e6x ECU in a rust-free '86 GXL (no one ever claimed that the paint was good) that is my test bed for new engines. It has turbo drivetrain in decent condition. The car currently has an '88 four-port engine in it with 10,200 miles on polished 8.2:1 CR rotors. It has a blueprinted stock manifold on it. I believe that my ignition is costing me about 30 WHp (It should make about 250 WHp). I like doing development. In fact, it was the love of developing new or better products that got me into engineering in the first place. I have a very long and otherwise boring Wisconsin winter ahead of me and I am looking for a project that keeps me in the heated garage. Because I spent all last winter building small block chevys, I figured that I would devote this winter to rotaries. Here are the options for the winter: Leave the engine block alone and strap a GT37 VGT on it - Shoot for 500 WHP @ 14.5psi Leave the engine block alone and strap a pair of twin turbos on it - Shoot for 450 WHp @ 14.5 psi Take the engine out, set it aside and build a semi-PP out of an old 6-port block - Shoot for 250 WHp > 30 MPG and 1,000 rpm idle Take the engine out, set it aside and replace it with a built-streetported 6-port - Shoot for 200 WHp NA Take the engine out, tear it down and install the balanced, high compression assembly, build a custom intake, install Yukon coils and E8 ECU - Shoot for 300 WHp, streetported NA EDIT: I am mostly interested in which of these would be most useful to the community at the moment. I will probably do all of them eventually. Complicated is not an issue at all. I intend for this to take all winter. __________________ 1986 GXL ('87 4-port NA - Haltech E8, LS2 Coils. Defined Autoworks Headers, Dual 2.5" Exhaust (Dual Superflow, dBX mufflers) 1991 Coupe (KYB AGX Shocks, Eibach lowering springs, RB exhaust, Stock and Automatic) Last edited by NoDOHC; 10-31-2009 at 12:32 AM.