DSP to SM build

[RatFink]

Ben,

Nice build. I see you are planning on changing the STA's. Out of my own curiosity, are you allowed to change the STA pivot angle in SM?

[anglin]

After seeing a number of other engines (not the 2.3) fail in autocross and road course on slicks due to oil starvation, it got me thinking about mine. I still have the stock oil pan on mine, but I haven't made the switch to r-comps yet. Since you have been running yours for a few years, I figured you would be the best person to ask.

I blame my second turbocharger failure on oil starvation. Journal bearings like those in the stock turbo simply do not tolerate oil starvation. It only takes a couple seconds of shaft touchdown on a high speed shaft to kill the bearings. I noticed the stock oil pressure warning light came on and stayed on during a hard left sweeper. The turbo started to make really loud siren noises and that was the end of the day for me.

I need to get the weight down on my car. I know removing the rear seats, changing the front seats for aluminum, fiberglass, or CF, and getting rid of the sunroof will make a big difference. I know there are more things I can swap for lighter items as well. Mine was 2770lbs when I weighed it a few years back.

Are you targeting Street Modified as well? Easy modifications will get you under 2700 lbs.

[DSPXR4ti]

Very exciting!

Subscribed!

Is your car caged?

No but if I can get the weight down to under 2340lbs, I might put in a 6 point because that should add 85lbs but thats last on the list at this point.

Ben

[DSPXR4ti]

Ben,

Nice build. I see you are planning on changing the STA's. Out of my own curiosity, are you allowed to change the STA pivot angle in SM?

Nope, I asked on the SCCA forums and that was a big fat no, the pick up point have to stay stock, so they will still be 16 degree STA's but with great adjustably.

Ben

[whitelx]

After seeing a number of other engines (not the 2.3) fail in autocross and road course on slicks due to oil starvation, it got me thinking about mine. I still have the stock oil pan on mine, but I haven't made the switch to r-comps yet. Since you have been running yours for a few years, I figured you would be the best person to ask.

I blame my second turbocharger failure on oil starvation. Journal bearings like those in the stock turbo simply do not tolerate oil starvation. It only takes a couple seconds of shaft touchdown on a high speed shaft to kill the bearings. I noticed the stock oil pressure warning light came on and stayed on during a hard left sweeper. The turbo started to make really loud siren noises and that was the end of the day for me.

I need to get the weight down on my car. I know removing the rear seats, changing the front seats for aluminum, fiberglass, or CF, and getting rid of the sunroof will make a big difference. I know there are more things I can swap for lighter items as well. Mine was 2770lbs when I weighed it a few years back.

Are you targeting Street Modified as well? Easy modifications will get you under 2700 lbs.

Yeah, my engine has far too many internal modifications to go for any lower class and I'm not about to build another engine specifically to fit a lower class. So SM it is. I'll have to get a low pressure warning light. What value should I get for the pressure switch? Idle pressure is 25psi when hot.

Nope, I asked on the SCCA forums and that was a big fat no, the pick up point have to stay stock, so they will still be 16 degree STA's but with great adjustably.

Ben

It's too bad the RS500 was never imported into the US. They had an adapter that was installed onto the existing beam that changed the angle of the STAs. I am not sure if it was actually used them to mount the STAs from the factory or if it were just put into place for homologation, but that would probably have made it legal for us. It's a bit of a gray area. If it were legal, I am not sure if we would have to use the OEM ford part or if a replica could be used. The OEM would probably be nearly impossibly to find and expensive if you did.

[DSPXR4ti]

After seeing a number of other engines (not the 2.3) fail in autocross and road course on slicks due to oil starvation, it got me thinking about mine. I still have the stock oil pan on mine, but I haven't made the switch to r-comps yet. Since you have been running yours for a few years, I figured you would be the best person to ask.

I blame my second turbocharger failure on oil starvation. Journal bearings like those in the stock turbo simply do not tolerate oil starvation. It only takes a couple seconds of shaft touchdown on a high speed shaft to kill the bearings. I noticed the stock oil pressure warning light came on and stayed on during a hard left sweeper. The turbo started to make really loud siren noises and that was the end of the day for me.

I need to get the weight down on my car. I know removing the rear seats, changing the front seats for aluminum, fiberglass, or CF, and getting rid of the sunroof will make a big difference. I know there are more things I can swap for lighter items as well. Mine was 2770lbs when I weighed it a few years back.

Are you targeting Street Modified as well? Easy modifications will get you under 2700 lbs.

Yeah, my engine has far too many internal modifications to go for any lower class and I'm not about to build another engine specifically to fit a lower class. So SM it is. I'll have to get a low pressure warning light. What value should I get for the pressure switch? Idle pressure is 25psi when hot.

Nope, I asked on the SCCA forums and that was a big fat no, the pick up point have to stay stock, so they will still be 16 degree STA's but with great adjustably.

Ben

It's too bad the RS500 was never imported into the US. They had an adapter that was installed onto the existing beam that changed the angle of the STAs. I am not sure if it was actually used them to mount the STAs from the factory or if it were just put into place for homologation, but that would probably have made it legal for us. It's a bit of a gray area. If it were legal, I am not sure if we would have to use the OEM ford part or if a replica could be used. The OEM would probably be nearly impossibly to find and expensive if you did.

I can get those duplicated in days, AAhhhhh..... anyway they can make it up here, you would be the first with a brand new set.

Ben

[whitelx]

I can get those duplicated in days, AAhhhhh..... anyway they can make it up here, you would be the first with a brand new set.

Ben

I wish they were mine. I would gladly donate them for replication. Unfortunately they are just pictures I have found in my search to understand the differences between the RS500 on the standard RS and XR4Ti.

[whitelx]

See section 15







Also, the measurement between hole centers is 90mm




From here:
http://passionford.com/forum/ford-sierr ... ossie.html


But what is interesting is that it was only used to skirt the rules. They didn't ever use the mounting points or adapters, it was just to make that position in space legal to use in competition on a fabricated beam.

[DSPXR4ti]

Also, the measurement between hole centers is 90mm



From here:
http://passionford.com/forum/ford-sierr ... ossie.html

But what is interesting is that it was only used to skirt the rules. They didn't ever use the mounting points or adapters, it was just to make that position in space legal to use in competition on a fabricated beam.

Ok that give me enough info to fab up a set, I have an extra set of STA's also to extend them by 90mm. It's more then likely be ready after the National's. It would just be pulling time away from this year goal.

Ben

[xR4rally]

90mm seems like a lot. How much does it change castor/camber/toe at the wheel?

[whitelx]

90mm seems like a lot. How much does it change castor/camber/toe at the wheel?

You have to extend the leg of the STA to reach the new mount point. This is not a bolt-on modification.

[DSPXR4ti]

Now I have my pic thing figured out more to come.

Ben

[DSPXR4ti]

Will this was my first event with some of my new stuff, cam, 2wd cosworth intercooler,wilwood brake kit,shortly radiator,cosworth grill, change the spring rates to half of what it was, rear alignment. First time out a beat the 450hps EVO drivers in the SM class, very happy.

Now I get to put my T5 in, new front suspension, hood vents and a good tune and then just drive it to know how to drive her. HEHEhehehe.

Ben

[xR4rally]

Nice! What are your spring rates now?

[Esteban]

Yeah. Why the dramatic change on the rear spring rates?