New owner of a new to me xr4ti

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Buffalobill
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New owner of a new to me xr4ti

Post by Buffalobill » Thu Oct 15, 2020 9:12 pm

I bought a clean 87 xr on a whim.

It looks like it's been a little bit of a project for previous owners, it has a fmic, boost adjuster, and a t5 swap.

What does it take to get 280 who out of these? Just an upgraded fuel pump and pressure regulator, along with the big vam and svo computer?

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andyofcolumbusmerkur
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Re: New owner of a new to me xr4ti

Post by andyofcolumbusmerkur » Fri Oct 16, 2020 8:49 am

Its all sort of guessing without actual dyno time. But if stock xr computer is around 150 at 10psi and 175 at 15 psi, and tb is around 190 and svo around 205. Then maybe an extra 30hp if you have free flowing exhaust. Turn boost up to 19-21 and timing advanced a little for a little more. As long as you are not getting any detonation (guessing knock sensor is disabled) and run fresh high octane fuel you should be ok. I'm told you must have an intercooler but I've driven around without one using a big vam and PE computer. Just make sure you do not get too crazy with boost. I'm told the stock fuel system like pumps,injectors, fuel regulator can go to 30lbs of boost. But I'm also told the stock t3 doesn't like boosting much over 20psi and they get really inefficient and create lots of heat at those really high pressures. Also that fuel system is now 30+ years old and may not be able to keep up. 250 should be doable without too much work. Vendors can point you in the right direction from that point with t3/t4 turbo, radiator intercooler combos or npr style intercooler, or holset turbo and stand alone engine management. I would start with 3 inch exhaust + fuel system and don't forget about brakes and handling. :headbang
"Let me go get the keys to your brand new Hyundai!" Nooooooooooooooooooooooooooo!

Buffalobill
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Re: New owner of a new to me xr4ti

Post by Buffalobill » Fri Oct 16, 2020 12:10 pm

Lol, oh, it's got "performance" exhaust already!

Someone cobbed together a 3 inch exhaust with a cherry bomb that dumps behind the passenger side door.

I'm buying the thing off of just pictures, I haven't seen it in person yet.

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andyofcolumbusmerkur
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Re: New owner of a new to me xr4ti

Post by andyofcolumbusmerkur » Fri Oct 16, 2020 7:11 pm

Sounds smart. XR is a great car for a masochist such as yourself. Buying a used turbo car from the eighties is a good idea, even if site unseen. Don't listen to what anyone else tries to tell you. So put some lotion on and go pick up your new car.
"Let me go get the keys to your brand new Hyundai!" Nooooooooooooooooooooooooooo!

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Bob Weir
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Re: New owner of a new to me xr4ti

Post by Bob Weir » Fri Oct 16, 2020 8:27 pm

Check for rust floor pan and suspension to body. MCAs advertisers serving Merkurs 30+ yrs have the correct parts and knowledge to help you.

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Re: New owner of a new to me xr4ti

Post by Buffalobill » Sat Oct 17, 2020 3:50 pm

andyofcolumbusmerkur wrote:
Fri Oct 16, 2020 7:11 pm
Sounds smart. XR is a great car for a masochist such as yourself. Buying a used turbo car from the eighties is a good idea, even if site unseen. Don't listen to what anyone else tries to tell you. So put some lotion on and go pick up your new car.

Relax, it's getting I ride back on a trailer and parked next to my Studebaker....

What do you do, daily drive a 3 decades old car?

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Re: New owner of a new to me xr4ti

Post by Buffalobill » Sat Oct 17, 2020 3:52 pm

Bob Weir wrote:
Fri Oct 16, 2020 8:27 pm
Check for rust floor pan and suspension to body. MCAs advertisers serving Merkurs 30+ yrs have the correct parts and knowledge to help you.
The big reason for buying it was numerous pics of a clean rust free body and undercarriage. Up here, the biggest thing to look for in a project is lack of rust, lol....

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Re: New owner of a new to me xr4ti

Post by John Brennan » Mon Oct 19, 2020 8:55 am

Buffalobill wrote:
Sat Oct 17, 2020 3:50 pm
Relax, it's getting I ride back on a trailer and parked next to my Studebaker....

What do you do, daily drive a 3 decades old car?
:haha :cheers
This is my car, and these are my people!
1989 XR4Ti 5-Speed
2001 BMW Z3 3.0 5-Speed
2015 Fiesta ST 6-Speed
2015 Edge 3.5 V6 Auto/Paddles

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Bob Weir
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Re: New owner of a new to me xr4ti

Post by Bob Weir » Mon Oct 19, 2020 9:53 am

Buffalobill

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Re: New owner of a new to me xr4ti

Post by Ed Lijewski » Mon Oct 19, 2020 11:58 am

What do you do, daily drive a 3 decades old car?
Yes I do.

YMMV
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Re: New owner of a new to me xr4ti

Post by Buffalobill » Mon Oct 19, 2020 12:45 pm

Ed Lijewski wrote:
Mon Oct 19, 2020 11:58 am
What do you do, daily drive a 3 decades old car?
Yes I do.

YMMV

Awesome, I hope to join you if I sort it out and it runs good...

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Re: New owner of a new to me xr4ti

Post by thesameguy » Mon Oct 19, 2020 3:39 pm

Haha... when not DD'ing a 30 year old XR4Ti, I DD a 30 year old Saab. Ain't no thing.

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Re: New owner of a new to me xr4ti

Post by Buffalobill » Mon Oct 19, 2020 6:51 pm

thesameguy wrote:
Mon Oct 19, 2020 3:39 pm
Haha... when not DD'ing a 30 year old XR4Ti, I DD a 30 year old Saab. Ain't no thing.
I know. With internet parts sources and info, you can drive most any car you want....

Everyone ribbed me over a bmw I had a few years ago. All the same excuses, parts are too expensive, too hard to work on. I dug into it, not any harder than a chevy. Lots of parts for that compared to the merkur though...

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Re: New owner of a new to me xr4ti

Post by John Brennan » Tue Oct 20, 2020 12:23 pm

Buffalobill wrote:
Mon Oct 19, 2020 6:51 pm
thesameguy wrote:
Mon Oct 19, 2020 3:39 pm
Haha... when not DD'ing a 30 year old XR4Ti, I DD a 30 year old Saab. Ain't no thing.
I know. With internet parts sources and info, you can drive most any car you want....

Everyone ribbed me over a bmw I had a few years ago. All the same excuses, parts are too expensive, too hard to work on. I dug into it, not any harder than a chevy. Lots of parts for that compared to the merkur though...
I have found that my almost twenty-year-old BMW (2001 Z3 3.0i) has lots of reasonably-priced parts available, but even more importantly, is one of the easiest cars to work on I've ever owned (since the Late Pleistocene, anyway). It's almost as if it was designed that way... :esurprise

That said, I don't daily it, and I wouldn't want to be beholden to commuting in it, which can mean being held hostage to getting it fixed right now if anything goes wrong. That's what the newer cars are for... :wink:
This is my car, and these are my people!
1989 XR4Ti 5-Speed
2001 BMW Z3 3.0 5-Speed
2015 Fiesta ST 6-Speed
2015 Edge 3.5 V6 Auto/Paddles

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Re: New owner of a new to me xr4ti

Post by DAReese » Wed Oct 21, 2020 4:34 pm

Buffalobill wrote:
Sat Oct 17, 2020 3:50 pm
andyofcolumbusmerkur wrote:
Fri Oct 16, 2020 7:11 pm
Sounds smart. XR is a great car for a masochist such as yourself. Buying a used turbo car from the eighties is a good idea, even if site unseen. Don't listen to what anyone else tries to tell you. So put some lotion on and go pick up your new car.

Relax, it's getting I ride back on a trailer and parked next to my Studebaker....

What do you do, daily drive a 3 decades old car?
Most of the year. I drive my 88 XR in nice weather, the 89 Scorpio if there is much of a chance of rain and my 2007 Camry in the winter. XR has 276,000 on it , Scorpio has at least 178,000 on it before the odomoeter died, and the Camry has 120,000 on it.
David Reese

88 XR4Ti - mono white T5, someday to be bi wing
89 Scorpio - waiting on some parts before it hits the road again
88 XR4Ti - mono red C3, parts car
used to own 86 dark blue traded in on a min van, what was I thinking?

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