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Author Topic: The 91 Capri GT  (Read 6281 times)

chrispoe

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    • 91 BP Capri GT
The 91 Capri GT
« on: May 10, 2015, 06:02:35 PM »

Here she is topless and awake



The reason I call mine the Capri GT is due to the fact that the BP engine and electrical upgrade  was sourced from a 92 Escort GT.


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greywolf27030

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Re: The 91 Capri GT
« Reply #1 on: May 11, 2015, 10:49:58 AM »

Very, very, very nice Chris.  Did you do the conversion, if so how difficult was it.  I think I'd rather have that than a turbo.  More power and torque and fewer things to go wrong.

Jack Byrd
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blueamber

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Re: The 91 Capri GT
« Reply #2 on: May 11, 2015, 03:34:51 PM »

Agreed, that is a nice ride!  If you could take the time to do a write-up on the conversion, it would make interesting reading...
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chrispoe

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Re: The 91 Capri GT
« Reply #3 on: May 12, 2015, 11:30:38 AM »

I did it myself back in the spring of 2001. Never thought I would still be driving this car 14 years later…LOL. 

The swap is really easy if you use the stock capri’s electrical system. The only advantage to using the escorts electrical system is being able to control the VICS solenoid (can be done with a cheap rpm switch) and the ignition & cooling fan relays are located inside the fuse box. Rocketman made a list here:  http://www.teamcapri.com/forum/index.php/topic,2864.0.html on doing a BP swap, but a lot of that list doesn’t apply to doing the swap in a MTX N/A.

I probably should do a how to swap guide for N/A owners and hopefully somebody else will do the swap too because so few BP swapped capris exist, and soon one more will cease to exist with project GTZ.
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greywolf27030

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Re: The 91 Capri GT
« Reply #4 on: May 12, 2015, 11:59:27 AM »

Over that time, have you been able to compare it to an XR2 as far as power and handling is concerned?

Jack Byrd
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chrispoe

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Re: The 91 Capri GT
« Reply #5 on: May 13, 2015, 10:08:45 AM »

The brakes and suspension on my car are identical to the XR2 except for the smaller rear swaybar and handling is almost identical. The BP engine is only 20.5mm longer then the B6 and weighs about the same as the B6T. When I did the swap, I removed the entire AC system and had the flywheel machined down to 14 pounds so my front end is lighter then stock.
I have raced against a few XR2s over the years. The 0-60 is on par with stock XR2s and it’s slightly faster in the quarter mile too, but if the XR2 has a 2.5 inch exhaust and running 10+ pounds of boost, it will be faster.
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greywolf27030

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Re: The 91 Capri GT
« Reply #6 on: May 13, 2015, 05:12:40 PM »

3/4 inch in length and machining the flywheel to lose some weight is very interesting.  I need bigger sway bars, mine are smaller than what's considered standard.   I'd want to keep my A/C, but that looks like a really interesting viable swap if and when I get ready to go faster.  Thanks for the information.

Jack Byrd

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WashiestSnake

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Re: The 91 Capri GT
« Reply #7 on: March 27, 2016, 12:51:06 AM »

Hey Chrispoe, sorry to be bringing up such a old thread.
I was wondering is it really worth the BP swap, in your opinion would it be better just to Turbo Swap?
Is there any added benefit to the 1.8 other then ability to make better HP?
Would stock NA wiring work?
How exactly does the passenger mount need to be modified?
Any specialty parts needed other then G-series tranny?
« Last Edit: March 27, 2016, 12:53:49 AM by WashiestSnake »
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1991 Mercury Capri 68,xxx Miles--Project(AWD)
1996 Lincoln Continental -- The Boat(Given to my Brother)

chrispoe

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Re: The 91 Capri GT
« Reply #8 on: March 28, 2016, 10:24:14 PM »

This thread is less than a year old, so it’s not that old..LOL


Is the BP swap worth it……..Yes and no
It really depends on what you’re situation and goals are.
Are you looking for a cheap and easy upgrade or are you looking to make the most power?

If you’re looking 140HP or more, the turbo would be better IMO.  The best method to go N\A to turbo would be to buy a donor car and swap engine, tranny, axles, wiring, ecu, and clutch pedal over.

If you’re for simple, cheap and most reliable, the BP would be better.  For the BP swap you just need engine, manifolds, and the intake tube/exhaust down pipe which can be found for dirt cheap.

Besides getting more Hp, the Bp enjoys better aftermarket support and with it’s greater displacement produces more low end torque. IMO this makes the Bp nicer for stop and go city driving,
One instance in praticulac, there’s a large hill I have to go up when driving home. With the Bp I no longer need to down shift to maintain my speed going up it.

When doing a N\A Bp swap in an N\A, it’s easiest to use the Capri’s stock wiring and electronics.

As for the transmission, I wouldn’t bother trying to swap a XR2's G-series tranny for a N\A Bp swap(the XR2's MTX gearing is for turbos and SOHC engines). F-series tranny has superior gearing for N\A use and is more than strong enough to hold a Bp. In fact mazda has used the F-series on 1.8L and ford has too with the 1.9L.
If you have an automatic, ford has used the same F-4EAT tranny in our Capri as they did with the last gen 2.0L ztec powered Escort(just a different bellhousing). So the stock auto tranny should also be strong enough for a BP too.


Here’s some pics of my passenger side mount

The pic on the left is frame to motor mount bracket. I welded a ½ inch washer on each side of the mount outwards toward the fender about 1/3 from the original hole location. Then I drilled the center of the washers out and repainted the bracket black.

The pic on the right is when you look down the side of the engine’s cam cover at the motor mount to engine bracket. I slotted these holes about a ¼ inch to move the mount closer to the engine.



P.S...I've been slowly puting together a list of things I did to do this swap and have been planning to post it next month or two when I finish it to celebrate the 15th annaversity of my BP swap.
« Last Edit: March 28, 2016, 10:37:22 PM by chrispoe »
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WashiestSnake

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Re: The 91 Capri GT
« Reply #9 on: March 28, 2016, 11:54:12 PM »

Just for posterity, and because I couldn't find anything on the forum, how much room is there on the exhaust side of the engine with the BP installed?

Do you believe you could put a centrifugal supercharger from a Miata kit on it, with custom intake routing?
 I'm not really looking into turbos atm, and I know the BP has the ability to reach way higher horsepower levels then the B6.

How do you find the Ford valve cover? I've searched all over and cant seem to find the Ford branded ones, all I find is the Miata/Protégé valve covers.
« Last Edit: March 29, 2016, 12:14:23 AM by WashiestSnake »
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1991 Mercury Capri 68,xxx Miles--Project(AWD)
1996 Lincoln Continental -- The Boat(Given to my Brother)

chrispoe

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    • 91 BP Capri GT
Re: The 91 Capri GT
« Reply #10 on: March 31, 2016, 11:26:30 AM »

The Bp engines with the Ford valve cover comes from the 91-96 Ford Escort GT and the Mercury Tracer LTS.

The clearance on the exhaust side of the Bp engine is identical to the original engine.

You definitely won’t be able to use the Miata mounting brackets, there’s less than 4 inches of clearance between the engines timing cover and the backside of the headlight bucket.
I do believe you could fit a Rotrex centrifugal supercharger if you put it where the AC compressor is.
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WashiestSnake

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Re: The 91 Capri GT
« Reply #11 on: June 03, 2016, 08:16:26 PM »

What do you think of a supercharger kit like this, work on a Capri? I realize its expensive, and all but what would cause problems with using one?
   http://www.fastforwardsuperchargers.com/mx5-supercharger-kit.html
« Last Edit: June 03, 2016, 08:23:31 PM by WashiestSnake »
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1991 Mercury Capri 68,xxx Miles--Project(AWD)
1996 Lincoln Continental -- The Boat(Given to my Brother)

Rocketman

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Re: The 91 Capri GT
« Reply #12 on: June 04, 2016, 12:43:04 PM »

What do you think of a supercharger kit like this, work on a Capri? I realize its expensive, and all but what would cause problems with using one?
   http://www.fastforwardsuperchargers.com/mx5-supercharger-kit.html

It's intended for a RWD engine setup where you have some room on each side of the engine.
If you went with the BP trans that leaned the engine forward, you may have just enough room between the head and firewall for it. Fitting the pulleys and drivebelt will be an issue. I had been working on a fairly similar setup for a BP a while back that involved a custom manifold, and a supercharger tilted caddywompus to squeeze it into place
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1.8L Turbo All Wheel Drive Capri... the "GTXR2"


WashiestSnake

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Re: The 91 Capri GT
« Reply #13 on: June 04, 2016, 03:35:04 PM »

Update: Figured it out on my own.
« Last Edit: July 16, 2016, 12:15:03 AM by WashiestSnake »
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1991 Mercury Capri 68,xxx Miles--Project(AWD)
1996 Lincoln Continental -- The Boat(Given to my Brother)

azgtx

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Re: The 91 Capri GT
« Reply #14 on: June 04, 2016, 05:58:44 PM »

Why not run a turbo..plenty of bolt on stuff and just as much power for likely less money.
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