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The Merkur Club of America Forums • "Ray's AKA demonfire's XR4Ti build up" - Page 36
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Re: "Ray's AKA demonfire's XR4Ti build up"

Posted: Sun Mar 30, 2014 6:28 pm
by Ray
13 Days to first points event, and of course, i decided at the last minute to change some things.

Off season changes - front spring rate changed from 500 lb / in to 600 lb / in - 1" shorter springs, also lowered height on perch slightly so about 1.5" lower static. Will adjust as needed. Lowered rear 3/4" as well.

Oil pump, erm, well, safety wired in.

Welded reinforcement tabs for front tow hooks.

Fixed some slow leaks. Still need to get that radiator fixed, but the weep is so small it doesn't phase me.

Biggest change isn't in yet, decided to go with a 238 code t5 (thanks Brad). I think the ratios with the 3.36 rear end will be good for my power levels and types of courses we have. Dropped the input shaft off to be machined today. Going to modify the input shaft to basically be a 2.3 shaft. Gave the guy all the specs. Didn't want to deal with spacer or anything.

OD on pilot bearing was 17.42mm or 0.686"
OD will be 15.00mm or 0.588"

Will reduce length on the pilot bearing by 0.250" and also push back the spline portion 0.250".

Disassembled and inspected the gears - everything looked really nice, not worn, blocker plates, synchros, etc didn't appear to be worn. Not much, if any metal on the magnet so i'm hopeful.

Really didn't do much else, car was pretty sorted last year.

Have some pics on my phone. Nothing really exciting.
I might weld a cover on instead of that polycarbonate plate on the intake manifold. Not entirely sure yet.

Re: "Ray's AKA demonfire's XR4Ti build up"

Posted: Wed Apr 16, 2014 6:16 am
by Ray
https://flic.kr/p/n8LBg6

Hard braking to hard right corner. :)

Re: "Ray's AKA demonfire's XR4Ti build up"

Posted: Wed Apr 16, 2014 7:27 am
by catapultkid
Nice work Ray. Love the photo.

Re: "Ray's AKA demonfire's XR4Ti build up"

Posted: Thu Apr 17, 2014 6:27 am
by Ray
Thanks :)

Quick question for those of you who have had the input shaft machined from a v8 or v6 mustang t5 - is it case hardened? Mine is getting done today, just had to verify.
My class this year got pretty impressive. CP is mostly a v8 class, so i'm against a bunch of very well prepared mustangs and camaros. Some in the 600hp range. Should be fun. I'm the only 4 cyl in class... But i have been the only 4 cyl in class for years anyway.

Re: "Ray's AKA demonfire's XR4Ti build up"

Posted: Thu Apr 17, 2014 8:42 am
by GPz11
Don't know if it's case hardened but that's the same thing we did with my V6 T5.

Did it a couple of years ago and it's been working just fine.

Re: "Ray's AKA demonfire's XR4Ti build up"

Posted: Mon Apr 28, 2014 5:26 am
by Ray
Fun day yesterday. Need to work on my driving, but my co-driver snagged first in a pretty competitive CP class in the merkur yesterday. Gotta love beating ALL the fire breathing v8's with a little 4 cyl that's older than almost everyone in class...

Car ran like a top. No issues.

Image

Image

Image

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all pics at cartct.com

:)

Re: "Ray's AKA demonfire's XR4Ti build up"

Posted: Mon Apr 28, 2014 3:00 pm
by usmcgunner27
Where's the "Like" button?

Re: "Ray's AKA demonfire's XR4Ti build up"

Posted: Mon Apr 28, 2014 4:10 pm
by John Brennan
usmcgunner27 wrote:Where's the "Like" button?
Either on FB, or on MS-- where it's never worked, anyway. I "Like" the idea, though! :headbang

Re: "Ray's AKA demonfire's XR4Ti build up"

Posted: Mon Apr 28, 2014 4:42 pm
by jkxr4ti
Love the spikes on the airdam!

Re: "Ray's AKA demonfire's XR4Ti build up"

Posted: Tue Apr 29, 2014 7:35 am
by catapultkid
Funny how everyone is wearing coats in the images. Must still be cool up there. Car looks mean dude!

Re: "Ray's AKA demonfire's XR4Ti build up"

Posted: Tue Apr 29, 2014 9:27 pm
by Ray
Yeah it's been colder than normal up here this spring. Hopefully warms up soon. Car ran like a top :) Love days like that.

Re: "Ray's AKA demonfire's XR4Ti build up"

Posted: Wed Apr 30, 2014 2:38 am
by In XS 7
I love this car, I learned a lot from this thread and "Joe's Rain cloud".

Re: "Ray's AKA demonfire's XR4Ti build up"

Posted: Mon May 05, 2014 9:37 am
by cmouta
Ray how was the new Thompson yesterday?

Re: "Ray's AKA demonfire's XR4Ti build up"

Posted: Tue May 06, 2014 5:00 am
by Ray
It was okay - the lot they gave us was smaller than expected, but the pavement was nice. The course was somewhat simple, but fun. The road course looks like it's going to be a blast :)

Oh, my XR won in a large field again. Again, my co-driver did it. I need to get my head on straight. At least the car's fast :)

Re: "Ray's AKA demonfire's XR4Ti build up"

Posted: Tue May 06, 2014 2:04 pm
by In XS 7
:thumb Congratulations on the new victory. :applause :applause :applause