Autocross EVO - Street Modified Build
16.1.D - Drivetrain and related components (induction, ignition, fuel systems, etc.) are unrestricted except for the following limitations:
. . . .
Motor and drivetrain mounts are considered part of these allowances, and any material is permitted. The allowances of 16.1.P may be used to affix brackets, but these brackets shall serve no purpose other than engine and drivetrain mounting (e.g. they may not provide chassis stiffening).
16.1.G. Subframe connectors are allowed, but each connector must be
attached individually without any lateral components attaching
the two longitudinal frame rails. Subframe connectors may be
bolted or welded. SP allowances which authorize unrestricted
mounting of suspension components do not permit the
incorporation of non-SP-legal subframe connectors into the
mounting scheme for a Street Modified vehicle.
15.10.I. - Engine mounts may be replaced, but must attach in the factory
location(s) without additional modification or changes. Engine
position may not be changed. The amount of metal in a replacement
mount may not be increased relative to the amount of metal
found in a standard mount for the particular application. Solid
metal mounts are specifically prohibited. . .
I say the Mustache bar replacement is no problem in SM with drivetrain mounting being fairly open. I see nothing that would cause a problem there.
For the front bar, it all depends on if you can argue that the whole bar is part of the engine mount, or that the bar is a subframe connector. If you can argue either of these, then yes, I believe the front bar would be allowed also.
What does everyone else think??
EVOlutionary
. . . .
Motor and drivetrain mounts are considered part of these allowances, and any material is permitted. The allowances of 16.1.P may be used to affix brackets, but these brackets shall serve no purpose other than engine and drivetrain mounting (e.g. they may not provide chassis stiffening).
16.1.G. Subframe connectors are allowed, but each connector must be
attached individually without any lateral components attaching
the two longitudinal frame rails. Subframe connectors may be
bolted or welded. SP allowances which authorize unrestricted
mounting of suspension components do not permit the
incorporation of non-SP-legal subframe connectors into the
mounting scheme for a Street Modified vehicle.
15.10.I. - Engine mounts may be replaced, but must attach in the factory
location(s) without additional modification or changes. Engine
position may not be changed. The amount of metal in a replacement
mount may not be increased relative to the amount of metal
found in a standard mount for the particular application. Solid
metal mounts are specifically prohibited. . .
I say the Mustache bar replacement is no problem in SM with drivetrain mounting being fairly open. I see nothing that would cause a problem there.
For the front bar, it all depends on if you can argue that the whole bar is part of the engine mount, or that the bar is a subframe connector. If you can argue either of these, then yes, I believe the front bar would be allowed also.
What does everyone else think??
EVOlutionary
The Salt Lake City ProSolo was said to be officially happening. No reason to wait, none the less. The current entry list is pretty disappointing. I just ran a normal points event in Denver this weekend and it had 164 entries; the Pro currently has 68 I think >.> Warrtalon were you at the Denver Event at Coors Field? I only saw one well-driven Evo but it looks like it was Clayton Cobb's.
Yeah, I'm Clayton Cobb - you can recognize my GG MR by those unique Forge BDCK inlets in the front grill, and I have magnets showing some of my sponsors listed below.
I didn't realize it was you. I happened to be in the area with an ex-Boulder native. Long story short, we decide to drive. We were in a black 95 M3 with dark grey SSRs.
I'll hunt you down at the SLC Pro
-Jon
I'll hunt you down at the SLC Pro

-Jon
15.10.I. - Engine mounts may be replaced, but must attach in the factory
location(s) without additional modification or changes. Engine
position may not be changed. The amount of metal in a replacement
mount may not be increased relative to the amount of metal
found in a standard mount for the particular application. Solid
metal mounts are specifically prohibited. . .
For the front bar, it all depends on if you can argue that the whole bar is part of the engine mount, or that the bar is a subframe connector. If you can argue either of these, then yes, I believe the front bar would be allowed also.
What does everyone else think??
EVOlutionary
My view/opinion is that it's a direct replacement for the front crossmember/mount, so it s/b allowed...
I hope we hear other perspectives as well here--c'mon guys
. . . .
Motor and drivetrain mounts are considered part of these allowances, and any material is permitted. The allowances of 16.1.P may be used to affix brackets, but these brackets shall serve no purpose other than engine and drivetrain mounting (e.g. they may not provide chassis stiffening).
Actually, after re-reading this I think even the solid mount AMS unit would be legal, once again, as long as you can say the whole bar is part of the "motor mount".
EVOlutionary
Then would you call it a subframe connector? If so, it's legal.
As far as it being part of the engine mount - the entire purpose of that bar is to locate and carry the motor mount. Due to its design it can't add much if any torsional rigidity to the front end.
16.1.P may be used to affix brackets, but these brackets shall serve no purpose other than engine and drivetrain mounting (e.g. they may not provide chassis stiffening).
Also I think it could be considered a bracket used for drivetrain mounting as allowed above? Anyone else have an opinion??
EVOlutionary
As far as it being part of the engine mount - the entire purpose of that bar is to locate and carry the motor mount. Due to its design it can't add much if any torsional rigidity to the front end.
16.1.P may be used to affix brackets, but these brackets shall serve no purpose other than engine and drivetrain mounting (e.g. they may not provide chassis stiffening).
Also I think it could be considered a bracket used for drivetrain mounting as allowed above? Anyone else have an opinion??
EVOlutionary
alright guys, this is in regards of the JDM bumper w/ no crash beam not being legal in SM
they do make an OEM crash beam, would this still fly? its OEM Mitsu, and the rule book requires it to be OEM
https://www.evolutionm.net/forums/sh...d.php?t=190877
thanks in advance
they do make an OEM crash beam, would this still fly? its OEM Mitsu, and the rule book requires it to be OEM
https://www.evolutionm.net/forums/sh...d.php?t=190877
thanks in advance







