202 Gemini
#1 _Mr Detroit_
Posted 14 March 2011 - 01:23 PM
The plan is to put it together with a lot of weight reduction and a 202 Holden straight six for drag racing and burnouts. A bit of a fun car really and something to use as a way of teaching my kids how to work on cars - sure beats playing with dolls.
I managed to sell the original G161 4 banger engine and the tranny for $280 and some of the other parts to completely reclaim the cost of purchase (against 13 for 1300 rules I know). Have also purchased some complete engines dirt cheap (no more than $25 each) and sold off the bits I don't want for well over what I paid. At the moment I am actually $400 in front on total expenditure so far.
Here are some pics to better explain things:
The original 4 banger engine. Went ok, although it didn't have power steering, which was a bitch when getting it home from Pakenham (East of Melbourne) to Norlane (near Geelong).
My work bench... cos I can
Some of the goodies I plan to use, including the two brand new in box genuine tail lights that came with the car.
The damage to the top of the bootlid.
Replacement bootlid.
Damage to the tail light
Bit of jack the dancer under the battery tray. Won't be needing it anyway as I am relocating the battery to the boot.
Rough job of cutting the cancer out from the battery tray. Thinking maybe using it to fit some sort of inlet duct or something.
Engine removed and about to do some dummying up of a six banger in the engine bay.
Dummy fitting a 202 with my head, pipes and manifold.
Dummy fitting a coil and fuel pump. The fuel pump is actually a small block Chev unit, which is a straight bolt on.
Not a lot of room for a radiator. Tossed up over this whether to use methanol, thus eliminating the need for water pump, thermostat and radiator. Might play around with fitting a radiator in front of the support panel intercooler style.
Plenty of sump clearance with the HZ unit. Tried a HG sump earlier and it didn't clear the steering rack.
Plenty of clearance for the pipes, although the G161 engine mounts will be disappeared.
Pipe clearance here too.
One tonner diff I picked up for free from a speedway racer, who only wanted the 3.55 centre and axles. Looking for a 3.9 or 4.44 centre for it when the time arrives. Will obviously be cutting it down.
The head I will be using. Not too much or too little shaved off the face. Have seen some people go too far and lose shitloads of power.
A factory inlet port with the big fat post for the head bolt. These heads were asthmatic on a 149, let alone on a 202 and anything you do will improve the shit out of them.
Hence the removal of the post and replacement with a steel tube. This was done by Yella Terra as it started life as a 161 unit, done to stage 4 specs.
Stock camshaft on the left and the SigErson unit I am using on the right. SigErson cam has a little less lift than the Crow unit I usually use but still has a big lump and a great spread of power delivery.
Roller rockers. Very similar to what is used on the 3.8 Holden V6s.
SAAS Racing seat which I got for $15 on Ebay, 5in Tacho with shift light ($25 on Ebay) and old school B&M shifter that was pulled out of an old Holden at a wreckers.
#2
Posted 14 March 2011 - 02:16 PM
#3
Posted 14 March 2011 - 04:55 PM
The V6 is a much simpler conversion with alot more pros then cons
I like it either way!
My messy bay:
#4 _Mr Detroit_
Posted 14 March 2011 - 06:09 PM
Wot179, looks like a good idea. I might start measuring the radiator and support panel up and see what I can come up. I certainly do not want to go to the unneccesary length of cutting out the firewall and setting the engine back, like I've seen someone else do.
We've gotten a 265 Hemi into a GB Galant many years ago and Holden sixes into a VN Commodore (Speedway), Ford Prefect and seen another one in a Morris Minor so it can be done.
#5
Posted 14 March 2011 - 07:31 PM
#6
Posted 14 March 2011 - 07:34 PM
Since Jesus played centre half back for Jerusalem and my dad and his dad before him
My dear old dad says that (he says full back) What is your heritage?
And I'm with you 2 on the 2-0-2
#7
Posted 14 March 2011 - 07:42 PM
they are only 25cm x 28 cm and 40mm thick, which is great, less water = less weight and i will be able to get it warm easier on alcohol.
also using a davies craig pump.
#8 _wblje_
Posted 14 March 2011 - 09:14 PM
#9 _judgelj_
Posted 15 March 2011 - 01:26 PM
#10 _Mr Detroit_
Posted 16 March 2011 - 06:23 PM
Scottish-Irish on my dad's side and English-German on my mum's side ... oh you mean my Vintage, Child of the late 70's and 80'sWhat is your heritage?
Thanks, I've decided against methanol as I don't want to run massive high compression. Have a radiator, which I am going to measure up and then measure the support panel to see what I need to do to make it fit.just food for thought but i have just bought a leyland mini alloy radiator off ebay, yes it is a china but for $96 at my door step im not complaining.
they are only 25cm x 28 cm and 40mm thick, which is great, less water = less weight and i will be able to get it warm easier on alcohol.
also using a davies craig pump.
Cheersgreat project the 202 fits well
Me too!hehe i have the same rocker cover!!
#11
Posted 16 March 2011 - 09:32 PM
just leave the Gemini converter in to get higher stall. use the Gemini shifter and console.
#12 _mick74lh_
Posted 16 March 2011 - 11:00 PM
#13
Posted 17 March 2011 - 07:42 AM
Any idea in the weight difference between the gemini and an early torana???
Have seen a HB torana with a turbo 202 run at the drags (cars from Adelaide i think) and it goes along quite nicely.
I have ablue 202 and tri-hard laying around and have often thought about a silmilar conversion my self.
Will be interesting watch it go together.
#14
Posted 17 March 2011 - 08:39 AM
#15 _Mr Detroit_
Posted 17 March 2011 - 08:19 PM
My car weighed in at 962kg when I bought it with full interior, engine etc. Hoping to get 100kg out of it, although keeping it in the mid 900s is more realistic due to the increase in engine size/weight. Four door HBs were in the mid/low 800s and two doors were even lighter again.Any idea in the weight difference between the gemini and an early torana???
It definitely will not being seeing any road useSo I'm guessing its not gonna be road registered? Great project either way. I love seeing people build something cool for next to nothing. They're the most inspirational projects
One of the reasons I am doing it is to actually do it on the cheap with as much done by myself at home and still be able to run some good numbers.
Have a Gemini converter sitting in the garage and picked up a 202 flexplate that had been drilled and tapped to suit a Gemini converter for 0.99 on Ebay.just leave the Gemini converter in to get higher stall. use the Gemini shifter and console.
#16
Posted 19 March 2011 - 11:58 AM
Any idea on what the stall speed is when using one and is it just a matter of redrilling the flex plate to make it work?
#17 _Mr Detroit_
Posted 19 March 2011 - 09:22 PM
Have heard about the gemini converter a couple of times now,
Any idea on what the stall speed is when using one and is it just a matter of redrilling the flex plate to make it work?
I'm not sure on stall speed, have heard everything from 2800 to 3900.
The Gemini flexplate definitely doesn't bolt up to the red six and I'm not sure if the redrilled flexplate from the six is the right way to go either but if I do opt for that and it works it will be 99cents well spent lol
#18
Posted 20 March 2011 - 10:27 AM
Certainly a cheap way to go if you can make it all happen.
Should be a good burn out package once you get it up and running.
#19
Posted 20 March 2011 - 02:49 PM
rpm I think depends on the torque of the motor, I found with a healthy 202 at 2200rpm it just started turning the wheels, so guess more than that with brakes set up properly.
Gemini is more than a stock 202 converter.
#20 _Mr Detroit_
Posted 20 March 2011 - 03:39 PM
#21
Posted 20 March 2011 - 08:10 PM
#22 _nicko61_
Posted 21 March 2011 - 08:07 AM
will the gemini converter slip onto the 6cyl trimatic properly? or are you using a Gemini Auto?found Gemini converter bolted straight to the 6 cyl flex plate, no drilling required.
rpm I think depends on the torque of the motor, I found with a healthy 202 at 2200rpm it just started turning the wheels, so guess more than that with brakes set up properly.
Gemini is more than a stock 202 converter.
cheers Nick
#23 _Mr Detroit_
Posted 21 March 2011 - 07:49 PM
#24 _stretchlc_
Posted 22 March 2011 - 04:21 PM
#25 _Mr Detroit_
Posted 29 March 2011 - 08:05 PM
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