Posts by GoinManta

You have to drill the hole. First drill through a 5/16" through the block, then with a 1/2" drill bit go down 3/8" for a place for seal.

Best to have NEW Drill bits when going at the cast iron.. save you a lot of time and hassle. Dull drill bits and cast iron don't go together.

On motors with steel pans already you can skip the drilling part. Which is good if the motor is in the car because, well I know I shouldn't have to tell anyone, but drilling through the block creates a LOT of shavings.. and probably best to have the oil pan off if your going to drill the block.

Trim tube to fit, top and bottom. If you have a steel pan already you may not have to trim the bottom.

Insert 1 ( or 2 seals if you already have the steel pan and the larger factory hole drilled ) on end of tube and lube seals.

Sometime sliding the seals in first about half way, then tube makes it easier ( This is more true if you drill the smaller hole. Overall depends on the seals you have and the size of the hole.

How to cure the leaky dipstick on motors with steel pans, where the dipstick seats into the block. It will also make your motor look better in the long run and make access to the dipstick easier.

Parts needed:

Aftermarket replacement chrome dipstick for a Chevy Small Block

A set of Opel EFI seals ( BMW or Volvo etc.. should work).

For the 2.4L or if your converting a motor from a AL pan to a Steel pan.

List of Opel CIH 5 speeds and ratios.

Stock Opel 4 spd

1st 3.428

2nd 2.156

3rd 1.366

4th 1.000

Getrag 240 5 speed ( Manta B, the smallest and easiest to install )

1st 3.717

2nd 2.019

3rd 1.316

4th 1.000

5th 0.804

R25 - Omega / Senator

1st 3.95:1

2nd 2.19:1

3rd 1.39:1

4th 1.00:1

5th 0.84:1

Rev 3.53:1

Getrag 265 5 speed - Senator / Rekord ?

1st 3.822

2nd 2.200

3rd 1.398

4th 1.000

5th 0.813

ZF S5-18/3 - Kadett GTE ( very rare, very expensive.. BUT remanufacturer.. for about $8000.00)

http://historicmotorsporttransmissions.com/shop/zf-s5-18-…chromesh-gears/ )

http://www.gr-box.sm/album/products-/#cambiozfopel-jpg

1st 2.99

2nd 1.76

3rd 1.300

4th 1.000

5th 0.87

I'm posting this as it wasnt easily found anywhere online.. now it will be

Im also planning on trying to install the more common R25 into a GT soon.

Finally got pictures to show what the problem was using a 2.4L oil pump cover, Crank position sensor and motronic pulley on a 1.9L timing cover.

I had installed 2.4L motronic on a new 2.5L build I recently did, and started having problems getting the car to start. Being motronic controls the ignition, it wasn't a simple solution to fix. As no amount of turning the distributor, or checking the cam pulley helped.

6 weeks of replacing parts and checking the head, checking ECU, etc.. etc.. and came across the issue and solution by accident.

Long story short, the gasket pushes the oil pump cover up and thus takes the crank sensor out of range. Yes that paper thin gasket was the problem.

So make sure to measure the gap with a proper feeler gauge. As my gauges were inches, I used my digital caliper the confirm the feelers. This also helped becuase I was having to use two feelers to get in the range.

So once confirmed that gap was too large. To get back in range I used sandpaper and file on top side of oil pump.

The range is really small, 0.3 to 1.3mm, measured from the tip of sensor to the ring on the pulley.

Also note TDC is easily seen on a EFI crank pulley, no more checking back at the firewall.

The finished product

Looking to do my Kadett Sedan as a Kadett Sport ( The Sedan version of a Rallye )

Debating on the block out look..for the sides..

Which would look better ? I'm leaning towards the black a little.. The Four door frames come out and can be painted seperately.. but it might be too busy.

Its not like they made this version for the US anyway so I could just rally the hood and be done with it..

I may have to go get this car..

Thats what I got.. So excited to be there I didn't take all the pictures I wanted, and in the basement I wasn't allowed too ( although told some people were and have pictures.. )

https://www.flickr.com/photos/varlamo…57628812984879/

The Bitter SC, prototypes and workshop.

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Old Timers

Mantas and Manta "C" prototype

Two things.. We know Opel Changes up the museum and has done so over the years. Many of us have been as lucky enough to get in.

But no where have all the pictures been placed in one place for everyone to see so I figured but better clickbait than a thread of the museum over the years for everyone to see..

Maybe this will encourage people to switch to this site from the OpelGT.com one.

My pictures from October 2015

As for the engine.. in the parts bin happened to be an authentic European 2.0L that was originally in the the Red Baron.

It too is in need of a rebuild as well. But if your going to rebuild.. might as well get the most bang for the buck.

It is what is going to the machine shop this afternoon.

So after pulling the Headlights and such to get into the wiring hidden in different places. It was obvious that setup wasnt going back..

So back to the parts bin, and look what we found.. a Manta grille in good shape and a set of PIAA low beam headlights mounted to bumper guards.

With a bit of work.. it still looks a bit "home made" and shade tree.. but it looks a 100x better than what it was IMHO..

Act 2 - Wiring, Headlights, dash, etc..

Looky what I found behind a piece of velcro :

PO CUT The dash cluster to put in switches.. But it gets BETTER

Yes that is either speaker wire or applicance wire with wire nuts.. BUT IT GETS BETTER

PO siliconed the wire nuts..

Act one complete

With a few interesting finds..

Additional Parts collected for act 2

Ill probably just update both threads.. some people just don't want to be bothered with "two sites" to keep up on.. I personally like this one better. But like Ebay you go where the traffic is.

Have to give it to Matt for sticking with it.. I think under all the sticky chrome and questionable design choices exists a good GT that will be fun to own.

Just going to have to take its restoration in small bite size pieces.