Can anyone confirm that the 1.6 4-A-FE is the same outside dimension as the 1.8 7A-FE

[Tigger_fromBuggynews]

A friend put a 1993 1.6 4-A-FE with an auto/trans in a 650ss Joyner dune buggy, I want to use a 1993-1997 1.8 7A-FE with an auto/trans in my 650ss Joyner dune buggy. Can anyone confirm that the 1.6 4-A-FE with an auto/trans is the same outside dimension as the 1.8 7A-FE with an auto/trans.

[Bitter]

IIRC its slightly taller.

[subzerounlimited]

the engines are about the same size but the transmission, is a bit bigger in the 7afe.

[Tigger_fromBuggynews]

Here is a link to the build thread,
http://buggynews.com/birth-of-a-drag...os-t26424.html

[Hiro Protagonist]

Originally Posted by Bitter

IIRC its slightly taller.

^this. The deck height (ie the height of the block) is 15mm higher in the 7A than the 4A. Not much, but it can be enough to require you to lengthen extractors/exhausts etc if you can't find 7A parts.

[Bitter]

the 7A is an insane choice for a buggy dude...all 110lb/ft of torque is available from 2800 RPM in stock form, advance the timing a little and run premium fuel and you have peak torque from around 2200rpm and a little more of it. add a stainless ebay header for $100 and you gain about 5-7hp but more torque again and all over, power won't fall off till fuel cut. the 7A will safely rev out to 6,000 rpm, but power falls off after about 5800.

the 7A automatic is the A245E which is a 4 speed trans, the A246E has some shorter ratio's and will give you a little more acceleration...of course the best choice would be a 5 speed manual, weighs WAY less and takes up WAY less room.

other cheap power adders would be a 30shot of Nitrous...the stock engine can handle that and it would be quite the kick in the pants on a buggy. +

[Tigger_fromBuggynews]

Originally Posted by subzerounlimited

the engines are about the same size but the transmission, is a bit bigger in the 7afe.

Thanks 4 the reply's.
It's going into a tube frame dune buggy, so if it's only a bit bigger, say an inch or two in the 7afe that should be alright.
Please check out the build thread and let me know if you have any suggestions.

http://buggynews.com/birth-of-a-drag...os-t26424.html

Originally Posted by Bitter

the 7A automatic is the A245E which is a 4 speed trans, the A246E has some shorter ratio's and will give you a little more acceleration...of course the best choice would be a 5 speed manual, weighs WAY less and takes up WAY less room.

+

That's some great info thanks, the buggy currently has a 4 speed stick shift and does about 65mph in the sand and that is fun but, when running in the woods and mud on atv trails she needs more power and gear selection control. Especially when Billygoating up nearly 50 degree hill climbs on tight trails, slipping the clutch and feathering the gas while rock-climbing can be a challenge, Are there any options for a limited slip or locker for the Toyota trans???
Here are some pics of my buggy both clean and muddy a couple months ago at St Joe's ATV state park in Missouri.




More pics.


More pics.

[Bitter]

Why yes! you can get a few types of Limited Slip for a few different transmissions that bolt to the A series engines. Most any trans that bolts to any A engine will swap between them, so the 5spd from an MR-2 (4agze) will mate up as will some other japanese market options from the corolla levin (4age engines) which either come with or have available aftermarket a LSD. Mechanical, clutch based, etc. You might be able to get more information on that by hitting up 6gc.net since the 7afe came in the 6th gen celica as well.

110lb/ft at 2500rpm on a 500-700lb buggy is just going to sit and spin even with a limited slip if you dump it from a stand still, I can't imagine that thing on street tires on the 1/8th mile...oh wait...yea I can. FUCKING FAST.

Another option would be a later model Toyota engine...the 1ZZ-FE. its even lighter than the A series (1zz is all aluminum) and makes more peak hp and peak torque over a wider rpm range.

Output is between 120 hp (89 kW) at 5600 rpm with 122 ft·lb (165 N·m) of torque at 4400 rpm, and 140 hp (104 kW) at 6400 rpm with 125.8 ft·lb (170.6 N·m) of torque at 4200 rpm

the later models of the engine have VVTI which boosts not only power output and smooths torque but enhanced fuel economy. the 1zz I think also mates to many transmissions the A series mates to as well and would also be an excellent choice. peak torque comes in a little later but over the whole RPM range its got more power, so at 2800 RPM its got only a smidgin less than the 7A-FE or about the same, but the power keeps coming as it winds out.

I don't know how much the 7A-FE weighs, but the 1ZZ-FE weighs about 225lbs. I suspect the 7A is closer to 350.

[Tigger_fromBuggynews]

Originally Posted by Bitter

Another option would be a later model Toyota engine...the 1ZZ-FE. its even lighter than the A series (1zz is all aluminum) and makes more peak hp and peak torque over a wider rpm range.

I don't know how much the 7A-FE weighs, but the 1ZZ-FE weighs about 225lbs. I suspect the 7A is closer to 350.

Thank's for that great info, it leads me ask this, is the 1ZZ-FE Engine/trans combo the same outside dimension as the 7AFE/4AFE???

The lighter weight would help with the way the suspension reacts and the acceleration is going to be seriously fast. This 1ZZ-FE Engine would allow me the option to polish up the engine block to make the aluminum shine or should I keep it dirty so it's a sleeper.

My 650ss already has a normal and clear automobile title. I also have a set of automobile street tires and rims.
So a powerful and reliable engine is next and I appreciate your help. Once I gather the info I can start looking for a low mileage donor car.

[Bitter]

I'm not sure about the dimensions, but the two are close. the 7th gen corolla and 8th gen corolla used the same chasis and both engines fit easily in the engine bay. if you get a 1ZZ thats made from 00-02 plan on tearing it down to replace pistons/rings and hone cylinders since those years had oil consumption issues. 03+ do not.

there's also the 1.5 from the Echo/Yaris. its VERY small and puts out around 90-100 HP.

The 1NZ-FE is a 1.5 L (1497 cm³) conventional Otto cycle variant of the 1NZ-FXE. It has the same bore and stroke, but the compression ratio is lowered to 10.5:1, and it features VVT-i. Output is 80 kW (110 hp) at 6000 rpm with 141 Nm (103 ft·lbf) of torque at 4200 rpm.

It weights 187lbs. I do not know what transmissions bolt to it off the top of my head, wikipedia can help you figure that out by looking at the list of toyota transmissions.