Joined
·
3 Posts
Recently I had the bad idea of putting one of Audis longitudinal 5 cylinders into an FD rx7 for Gridlife ClubTR, and in researching the options, that raised some questions. Before I list them, here are some of the rules that are effecting my choice:
-All vehicles must retain stock chassis with no fabricated
-Modifications (such as large unibody modifications) Minor modifications to facilitate engine swaps are allowed.
-Bolt on alternate materials may be used for Hood, Trunk and Hard Tops but shape must remain generally true to OEM.
-Dogboxes / sequential gearboxes prohibited , Dual clutch automatic style transmissions are allowed only when factory equipped in the car used in competition (no swaps).
-E85 is permitted, as are pump-sourced gasoline options up to 93 octane. No other alternative fuels are allowed. [I would prefer to run 91-93]
-Factory internals are specified as pistons, compression ratio, rods, camshafts, head and block casting, bore and stroke size and head porting (example: K24 swap ok, K24 block with k20 head not allowed, etc). Machining of engine internal components to gain advantage is not allowed (porting, decking or milling for compression, etc) . Other engine pieces are allowed to be modified (better oil pumps, oil pans, intake manifold swaps, etc.)
- Factory twin/sequential turbo rotary engines (FD rx-7, etc) are not eligible for Club TR / Street Lite.
-Forced induction cannot be swapped INTO any vehicle.
-OEM (single turbo, or single supercharger only) forced induction vehicles under 1.6L are allowed when using completely stock turbocharger and exhaust manifolds, as equipped on that specific VIN chassis [NA size limit is 2.5L]
-Drivetrain changes are prohibited, i.e., FWD to AWD or AWD to RWD.
Ive been looking around and see that there are 2/3 main longitudinal 5 cylinders, the AAN, 7a, and the 2.0 from classic Quattros. Has anyone done a NA build of an AAN? Is an NA aan functionally the same as a 7a? Was a rwd trans made for any of those 3 engines? Were any widely sold in the US? Does the AAN have stronger internals than the 7a? Do 5 cylinders rev decently fast? Do AANs have much NA support? Are 7As more optimized towards NA functionality? I probably should have stated this, but my HP goal is 250-300 rwhp, though I do not know if that is going to be through a stock RX7 5 speed or something else.
-All vehicles must retain stock chassis with no fabricated
-Modifications (such as large unibody modifications) Minor modifications to facilitate engine swaps are allowed.
-Bolt on alternate materials may be used for Hood, Trunk and Hard Tops but shape must remain generally true to OEM.
-Dogboxes / sequential gearboxes prohibited , Dual clutch automatic style transmissions are allowed only when factory equipped in the car used in competition (no swaps).
-E85 is permitted, as are pump-sourced gasoline options up to 93 octane. No other alternative fuels are allowed. [I would prefer to run 91-93]
-Factory internals are specified as pistons, compression ratio, rods, camshafts, head and block casting, bore and stroke size and head porting (example: K24 swap ok, K24 block with k20 head not allowed, etc). Machining of engine internal components to gain advantage is not allowed (porting, decking or milling for compression, etc) . Other engine pieces are allowed to be modified (better oil pumps, oil pans, intake manifold swaps, etc.)
- Factory twin/sequential turbo rotary engines (FD rx-7, etc) are not eligible for Club TR / Street Lite.
-Forced induction cannot be swapped INTO any vehicle.
-OEM (single turbo, or single supercharger only) forced induction vehicles under 1.6L are allowed when using completely stock turbocharger and exhaust manifolds, as equipped on that specific VIN chassis [NA size limit is 2.5L]
-Drivetrain changes are prohibited, i.e., FWD to AWD or AWD to RWD.
Ive been looking around and see that there are 2/3 main longitudinal 5 cylinders, the AAN, 7a, and the 2.0 from classic Quattros. Has anyone done a NA build of an AAN? Is an NA aan functionally the same as a 7a? Was a rwd trans made for any of those 3 engines? Were any widely sold in the US? Does the AAN have stronger internals than the 7a? Do 5 cylinders rev decently fast? Do AANs have much NA support? Are 7As more optimized towards NA functionality? I probably should have stated this, but my HP goal is 250-300 rwhp, though I do not know if that is going to be through a stock RX7 5 speed or something else.