Opel GT Forum banner

crate motor part deux

17K views 100 replies 29 participants last post by  rowdygt  
#1 ·
Since the original thread is now gone, I will be posting my progress with the motor swap. And...will be in desperate need of advice as my journey continues, so now that the motor is here and been looked over, the fun begins!! I will be posting pictures of my progress/setbacks and hope I can get a lil helpful knowledge as things get done. I really wish Daves threads werent deleted as they contained some vital information I would have liked to copy down somewhere..............not to mention some good pics!! Anyways... today was one last hell run in the GT before the swap and she really moved! Might be quite some time before I get to take her for a spin again! I'm trying to get things organized this week to pull the old motor and set them side by side to do some measuring. This will be an on-going thing as I need to gather intakes and carbs still so I'm hoping to get this completed by late next summer. Wish me luck!!
Joe
 
#2 · (Edited)
"nobody" Knows

Just as well Dave helped so much finding your motor and getting it delivered before ALL his postings were locked out. Seems the baby has been thrown out with the bath water due to a few of his more "in our face" posts!

A great pity that his more helpful posts are no longer available to us - wonder if they can/will be made accessible ever again ??

Hope those who complained are satisfied now ...... 3846 posts locked out!
 
#38 ·
Dave

Just as well Dave helped so much finding your motor and getting it delivered before ALL his postings were locked out. Seems the baby has been thrown out with the bath water due to a few of his more "in our face" posts!

A great pity that his more helpful posts are no longer available to us - wonder if they can/will be made accessible ever again ??

Hope those who complained are satisfied now ...... 3846 posts locked out!
Leopards can't change their spots and Dave can't change who he really is down deep. He will more then likely reappear on this web site under an assumed name but will be recognized as his postings will reveal him. Don't praise the snake because he didn't bite you as sooner or later if you pet him enough he will strike you, too.

I am sorry to see that his "good intentions" have struck again. Unfortunately you are out some money with maybe no way to get retribution.

Wish there was some way to help. Mike
 
#3 · (Edited by Moderator)
back to the drawing board........

Update: old motor is now out and crate motor has been test fitted. It looks as though this project will be brought back down into the realm of reality for the time being. By that I mean that the stock intake will be put back on with a weber 32/36 and an aftermarket header might be brought into replace the custom jobbie. Transmission will be stock as well as fitment of the shifter was an issue with the Omega 2.4 and the thought of hacking the shifter hole is not an option on such a clean car. I'd post pictures on this thread if I knew how........I'll do a search and try to figure it out so you can all see whats happening with the fitment of things. Original plan was dual weber carb set-up with custom exhaust header and the Omega 2.4 tranny and clutch.
Joe
 
#4 · (Edited by Moderator)
Joe, putting in pics is real easy. Just scroll down the page you put a new post in to the next block and you'll see the box "Manage Attachments". Click on that and another box will pop up. Using the browse boxes that are in the box will allow you to post two pics at a time from your PC. They must be approximately 640 pixels on the largest dimension, but any photo editing program can do that for you. HTH.
 
#5 ·
I for one would love to see pictures. Your absolutely correct about the heat shield and the header. I haven't had a GT with one in so long it never crossed my mind. Send me the header and a pic and it will be corrected. Tell me more about the shifter.
 
#6 · (Edited by Moderator)
In these pictures you can see that I have removed the motor mounts off the engine crossmember . The idea here is to move the motor forward a few inches and at the same time lower the motor 2" . The problems start with the steel oil pan on the crate motor....It hits the crossmember thus stopping any forward motion..I'm thinking the the aluminum pan off the old motor will help move things up because its quite a bit smaller. First issue...the 75 crate motor has the dipstick in the block, the 70 has it in the oil pan. Whitch dipstick do I use?? Next pic clearly shows that the shifter linkage is just too long and in 3rd gear its right at the back of the shifter hole(close but no cigar). Soooo....what I think needs to be done here is to modify an engine crossmember to push everything forward. Thus more than likely eliminating the fan blade and shroud because it will be right up up the radiator. An electric fan if front of the radiator should take care of the cooling. Any suggestions?Clear as mud right??
Joe
 

Attachments

#11 ·
I'm thinking the the aluminum pan off the old motor will help move things up because its quite a bit smaller.
If you do, make sure to swap the oil pickup tube as well, they are specific to each pan type.
First issue...the 75 crate motor has the dipstick in the block, the 70 has it in the oil pan. Whitch dipstick do I use??
You must use the correct dipstick for the aluminum pan...the dipstick lengths are different between aluminum pans and steel pans.
Next pic clealy shows that the shifter linkage is just too long and in 3rd gear its right at the back of the shifter hole(close but no cigar). Soooo....what I think needs to be done here is to modify an engine crossmember to push everything forward.
Is there room to modify the shifter itself? In other words, cut it, then weld it back in place offset forward from the original location.
My concerns with moving the engine forward are the inevitable issues...new under hood clearance? Driveshaft length? Cables and misc? Throttle linkage? Etc....

Often one modification changes a LOT of other parameters.

Bob
 
#7 ·
Forgot to mention, I'll need to hit the boneyard in search of a shorter rubber motor mount as well. Somthing needs to be there to absorb some of the vibration. desicions decisions....
Joe
 
#9 · (Edited by Moderator)
I already thought of that. And the question still has no answer. Thats the sort of stuff that I need to know before I dig into this to far. Under hood heat is another.......how hot will this thing get with no fan blade?? Sorta sounds like suicide to me but hoping others here have done it and can foresee any problems. Something I stumbled upon just by chance yesterday was the number 1970 stamped on the radiator support between the under hood rubber. Just so happens my car is a 70. Does anyone else have a year stamp? Or did the PO do this to mess with me??
Joe
 

Attachments

#10 ·
Under hood heat is another.......how hot will this thing get with no fan blade??. Somthing I stumbled upon just by chance yesterday was the number 1970 stamped on the radiator support between the under hood rubber. Just so happens my car is a 70. Does anyone else have a year stamp? Or did the PO do this to mess with me??
Joe
Joe, with Willit?'s big? motor, underhood heat is a minor problem. It does get warm, but I'm not sure if it's the 229 degree coolant temp that the computer finally turns the fan on, or if it's the ambient temps outside. As for the chassis number behind the MC on the radiator support, Willit? is a 72 and I have 1/2" numbers stamped in it, not the year though, but, 10F4944. HTH.
 
#12 ·
can you get another tunnel cover cut it and move the hole back , and cut the hole out of the tunnel with an offset oblong so if you turn it round and weld it back in the hole will be a few inches further back this way if you want to return it to original you just replace the cover and reweld the hole plate

i have done this before and it works very well

no good if you have to go back 6" but for 2" its fine
 
#13 ·
Don't forget you'll have an issue with the oil filter clearance on the front crossmember.
I don't think too much of the idea of moving the engine forward just to remedy a shifter problem.
You need to sleep on it for a while and you'll wake up with the right decision. It works for me somehow when I get stumped!:yup:
 
#16 ·
Yup, already thought about the oil filter...and need a flat cover for the pump.....I thought about this alot and the best answer I could come with was to put the old 4 spd back on and drive it this summer.This is when a junk car would come in handy to mock this up on. Right now I dont have the time and resources for this. For now,I think I'll just go have some fun and drive. And try to figure out a way to make this work (and I will !!!) a bit later when the weather turns foul. Its really not all that far off, just gotta figure out a way to squeeze a few more inches.....:D:confused::D
Joe
 
#19 · (Edited by Moderator)
Ok, maybe this is the dumbest comment in the world but....

Why not just use a Getrag 240 instead of the 265? In some ways the 265 is worth more, so a swap or trade should be easy enough.

The 240 will fit with a few minor mods. While I don't know much about the motor you're planning to use, I find it hard to believe the weber 32/36 will produce enough power to destroy the 240.

Just an observation....
 
#20 · (Edited)
I agree with the last post. Why not swap your 265 Getrag for a Getrag 240? The 265 is really suitable for big power and/or big torque engines, but it is almost overkill for most street stuff. The 265 is also a no-brainer fit into a Manta, so perhaps a Manta owner out there with a 240 might swap with you? Just a thought...

Bob
 
#22 ·
Joe, Glad to see things are going well with your swap and I think the Getrag 240 solves a lot of issues that the 265 is giving you. Remebering the specs Dave gave for your build, the 240 should have no problem handling the engine. I will be starting a similar thread shortly as I will be doing my swap and am as excited as you to get her done. My engine is slightly different than yours as I am running the 2.0 pistons with the lanier built head and I will be running a 32/36 weber and a sprint manifold with the 240 5 speed. Good luck :yup:
 
#23 ·
oops...............

Well todays adventure was another wild one. Pulled off the Omega 2.4 tranny and took off the clutch assembly.Here's what I found...and yes folks.... those are flywheel bolts off a motor that has never been started. Notice the different threads....and length bolts. Now what??????
Joe
 

Attachments

#24 · (Edited by Moderator)
As far as the shifter goes on the Omega... Its been modified already..... Here's a few pics for you all to see the dilemma a bit clearer. I'm thinking the swap a tranny offer is looking pretty good right now. Anyone interested shoot me a PM. BTW in both pics its in neutral.......
Thanks,
Joe
 

Attachments

#25 ·
Looking at that first photo, that's NOT a Getrag 265. A Getrag 265 has a removeable bellhousing, and is much bulkier than that. I have two of them for reference, they also say 'Getrag 265' cast right into the side of the case.

That tranny might be an R25 or R28 if it's in fact from an Omega. Pretty rare, but I don't know a lot about them.
 
#28 ·
yup I already know that Bob...... seems to be a crossbreed between a 240 and 265... mid to late 80's. best I can figure and I've been hitting the keyboard HARD to find more details about it to no avail. Its a GM knock-off best I can figure.
 
#27 ·
Looks like MantAscona is your man. Hopefully you two can make an "Opel Connection". :D
 
#30 ·
I just did a little research, the R25 was used in the late '80's up to 1990 Omega. The R28 was for the six cylinder version. Built by Aisin-Warner as far as I can tell. It's not useless, but you need to make it fit the car!