Spec Boxster Build

[cmacduff]

I knew that was going to be the next question....

Give me a few days and I will get some good pics of the cooler and the specs off the invoice. I think the most compelling thing was the oil pressure differences and my gut tells me that is the baffle mods that were done. I just had a stock EBS baffle and I was having pressure problems in a few corners at WSIR and then after the baffle mods and oil cooler they were gone. Pressures before got in to the mid to high teens in the problem corners and then I never got below 30-35 in the same places. I know that you have to be really careful and also analyze if I was on or off the throttle at those times also when making that determination. When I overlaid laps from before and after the pressure problem I had no less than 4000 RPM's in those same corners. Of particular note I have also learned it is important to know where those temperature readings are coming from and also where the pressure is read. I had an extra sensor installed and it reads these temps/pressures from the main bearing. It is my understanding that the stock sensor reads them from the oil pan.

That being said...I am by no means a Motec expert and am still a rookie in this hobby/sport and learning every day/time on the track. There are many others on this forum that know WAY more than I ever will. These are just my "rookie" findings. I know there are a ton of variables and nobody has the exact answer to this problem.

I want everyone to know I'm not an expert or claim to be one. Just want to share what I have learned about this issue thus far. I was fortunate to have a data system in the car before and after to make these comparisons.

I will follow up with some pictures and the specs on the oil cooler shortly.

[seningen]

Originally Posted by cmacduff

I knew that was going to be the next question....

Give me a few days and I will get some good pics of the cooler and the specs off the invoice. I think the most compelling thing was the oil pressure differences and my gut tells me that is the baffle mods that were done. I just had a stock EBS baffle

Clarification -- I'm running the EBS baffle -- just wondering what you mean by stock EBS? I also have a 0.5qt deeper sump with a pickup extension.

thanks,

Mike

[jsceash]

I'm not a spec driver But have been using an accusump setup deep sump and stainless windage baffles for almost 3 seasons, Mine is a 2 quart tank. I have data on 2 oil pressure point. One at the tank and the other at the port on the bank 1 head where the pressure switch normally mounts. I do not see pressure below 70 on the tank and 60 on the motor while on track. I am seeing 240-250 degree oil temps. I'm interested in additional oil cooling above the S engine mount cooler.

[seningen]

Originally Posted by jsceash

I'm not a spec driver But have been using an accusump setup deep sump and stainless windage baffles for almost 3 seasons, Mine is a 2 quart tank. I have data on 2 oil pressure point. One at the tank and the other at the port on the bank 1 head where the pressure switch normally mounts. I do not see pressure below 70 on the tank and 60 on the motor while on track. I am seeing 240-250 degree oil temps. I'm interested in additional oil cooling above the S engine mount cooler.

Just curious to see what your post track idle pressures are? I've seen mine drop below 15psi...

I snapped my temp sender post (ugh!!! and I am reordering a sender) so I don't have temp values yet).

Mike

[jsceash]

Originally Posted by seningen

Just curious to see what your post track idle pressures are? I've seen mine drop below 15psi...

I snapped my temp sender post (ugh!!! and I am reordering a sender) so I don't have temp values yet).

Mike

To answer your question I see 20 on the head and 25 on the sump.

My biggest problem was the original pressure relief 100PSI. It popped occasionally when the engine is cold UGH!!! finally put in a 125 PSI relief. I had to pull the carpet from the trunk.

[seningen]

Originally Posted by jsceash

To answer your question I see 20 on the head and 25 on the sump.

My biggest problem was the original pressure relief 100PSI. It popped occasionally when the engine is cold UGH!!! finally put in a 125 PSI relief. I had to pull the carpet from the trunk.

Thanks -- what AN hose sizes are you guys using for oil cooler/accusump/remote filter?

How about for tranny cooler?

Working on circling my Sears catalog....

thanks,

Mike

[thstone]

Here is a video that I was asked to help out with recently for House Automotive in Pasadena, CA.

The video stars me and all three of my cars.

And yes, that is a real PIWIS. And they have the newer version to work with all of the new cars.

I hope to be expanding my relationship with House Automotive soon...



House Automotive - Tom Stone

[RedTele58]

Tom - that's very cool. It's neat to see how much you enjoy your cars and thanks for all the help and advise you give here on the board.

Thanks for all you do here and best of luck in the upcoming track season!

Rick

[jaykay]

Hey what happened to the 944 T? Oh and well done video Tom!

[thstone]

Originally Posted by jaykay

Hey what happened to the 944 T? Oh and well done video Tom!

The 944 Turbo is currently in the shop getting a new engine installed. Expect to pick it up end of next week!

[seningen]

Originally Posted by thstone

The 944 Turbo is currently in the shop getting a new engine installed. Expect to pick it up end of next week!

That's too funny -- just fired up my 951 after an extensive rebuild at the shop last weekend...

However I'll be selling it -- eyeing a Spec Box to go with my 986S track car.

m

[thstone]

Originally Posted by seningen

That's too funny -- just fired up my 951 after an extensive rebuild at the shop last weekend...

However I'll be selling it -- eyeing a Spec Box to go with my 986S track car.

m

Hah! That is pretty funny! Let me know what we're going to fix next...

Sorry to hear that the 951 might go but you'll love a Spec Boxster!

[TeamOxford]

Originally Posted by thstone

The 944 Turbo is currently in the shop getting a new engine installed.

So that's what......four engines this year between the spec Boxster and the 944 Turbo?

Your VISA card must be pretty battered by now.

Just sayin'.............

TO

[thstone]

Originally Posted by TeamOxford

So that's what......four engines this year between the spec Boxster and the 944 Turbo?

Your VISA card must be pretty battered by now.

Just sayin'.............

TO

My household budget....

[BruceH]

Originally Posted by TeamOxford

So that's what......four engines this year between the spec Boxster and the 944 Turbo?

Your VISA card must be pretty battered by now.

Just sayin'.............

TO

I was thinking the same thing. No wonder you did the video, hopefully you are getting a discount!

[steved0x]

Cool video!

[jsceash]

Very nicely done!

[BruceH]

Great video Tom, thanks for sharing.

[thstone]

Next project is ready to start! Time to replace the transmission due to what seems to be a bad 3rd gear synchro in the original unit. I'll start this weekend.

Big thanks to member Hughes46 (Mike) for the replacement transmission. I promise to .... uh, beat the hell out of it. In a good way.

[cmacduff]

Sorry for the delay. Here is the build list for my oil cooler and a picture of it. The fan is actually underneath the cooler and pulls air through a hole in the trunk and exhausts to the street. There is also obviously a cut out in the bottom of the trunk to allow for this.