What engine to put into a 6 conversion?

jonat127 · Post by **jonat127** » Sat Nov 28, 2009 1:12 pm

I'm gathering info and knowledge but I have pretty much decided that I "need" a 6 and seeing as how I now have some time on my hands (redundant but looking for a job with school holidays off) I thought I would do a conversion.
I know it's a big job and not economically viable but this is my hobby not a business!

So, my question is, what engine should I be searching for. I don't want silly power just a bit more than the 4 and the wail of the 6.
I also don't think I want to go anywhere near fuel injection but I assume I can readily fit carbs to a later engine.

Recommendations please.

And if anyone has one they want to sell please let me know.

Cheers Jon

fourteener · Post by **fourteener** » Sun Nov 29, 2009 4:43 pm

If you want to keep it narrow bodied and not make massive mods to the brakes and gearbox etc then why not get one of the smaller engines (2.0-2.4)
I have a 2.4T and I think it suits the car pretty well, nice and tractable with plenty of torque.

The conversion is well worth doing and fairly straight forward if you don't have too many "while I'm in there's"

Ian Gunney · Post by **Ian Gunney** » Sun Nov 29, 2009 8:28 pm

i'd agree - having been in mike Karavasili's 2.0 914-6 (which Mike reckoned was pretty much S spec) I'd seriously think about that

mind you the torque of the 2.7 in my car is great

Derek · Post by **Derek** » Sun Nov 29, 2009 8:48 pm

3.6 no questions, job done

Derek

amallagh · Post by **amallagh** » Sun Nov 29, 2009 10:02 pm

No such thing as a 'bad' or 'good' combination, just different characters.

Fiesty fun 2.2S, 2.4S, 2.7RS
Grunty confidence 2.7, 3.0, 3.2
Solid as a rock dependability 2.4T/E, 2.7
Rubber shredding, mile eating reliability 3.6.

PMOs are great if you can find a set. Lot of money new but small fry against the budget for a proper 6 conversion.

I wouldn't fit any 6 without uprating suspension and brakes. The stock items just aren't up to handling anything over about 110/120bhp imho.
Being captain sensible - I'd have to say start with the brakes, suspension and steering and then move on the engine. But hat wouldn't be any fun, would it. Just uprate the engine and see how long it takes to stop !!!

I look forward to hearing regular updates

KS · Post by KS » Mon Nov 30, 2009 8:35 am

No no, you're all wrong...

http://www.renegadehybrids.com

Derek · Post by **Derek** » Mon Nov 30, 2009 12:07 pm

Scooby WRX

Derek

jonat127 · Post by **jonat127** » Mon Nov 30, 2009 12:32 pm

amallagh wrote:I wouldn't fit any 6 without uprating suspension and brakes. The stock items just aren't up to handling anything over about 110/120bhp imho.
Being captain sensible - I'd have to say start with the brakes, suspension and steering and then move on the engine. But hat wouldn't be any fun, would it. Just uprate the engine and see how long it takes to stop !!!

I look forward to hearing regular updates

Andrew,
I already have 911 front brakes & master cylinder. Didn't you notice the excellent braking as demonstrated by Phil on last years international?

The front torsion bars have been tightend up a couple of splines and there are 185lb springs on nice spax adjustable shocks on the back. The only piece of the transmission that might need upgrading is the drive shafts (but you know about that don't you!)

James,
Yes I am going to keep it narrow as it won't fit into my garage otherwise!

Have been offered a 2.2T by another DDKer so based on comments so far this seems like a good option.

Can somebody tell me the difference between T and S, thanks

Jon

Nige · Post by **Nige** » Mon Nov 30, 2009 12:43 pm

jonat127 wrote:.
Can somebody tell me the difference between T and S, thanks

about 40-50BHP!!

Do you have to go wide body for a SC motor?

Derek · Post by **Derek** » Mon Nov 30, 2009 12:57 pm

jonat127 wrote: Have been offered a 2.2T by another DDKer so based on comments so far this seems like a good option.
Jon

Thats a lot of work for a 30BHP increase over your standard 2.0/4 cylinder. Plus the extra weight.

Derek

impmad2000 · Post by **impmad2000** » Mon Nov 30, 2009 1:36 pm

jonat127 wrote:Can somebody tell me the difference between T and S, thanks

T's the "Cheap" motor, Cast Iron Barels not Ali, Cam profile is different (Less cammy on a T), Lower Redline 6.5 K rather than 7.3 K (close to this, but I'm surre someone will put you right with the numbers), and the crank may not be counter balanced. (Probably isn't on a 2.2, might be on a 2.4)
40-50 bhp may be the figures, but I'll bet they feel very different too !
Cheers
Tim

amallagh · Post by **amallagh** » Mon Nov 30, 2009 8:38 pm

jonat127 wrote: Didn't you notice the excellent braking as demonstrated by Phil on last years international?
Jon

Now that you come to mention it, I remember it well. I have been seeing a counsellor ever since !!

If the 2.2T is cheap then can't look a gift horse in the mouth but if you are going to have to rebuild it then I'd personally start with something a bit more spicey.
As said you'll only get 30/40 extra bhp over your flat4 with a lot of extra weight. The 2.2T can of course be uprated but that is where the expense comes in. 2.2T doesn't have a counter balanced crank like the S but still good for 150/160bhp with barrels/pistons/cams/porting as long as you don't rev it too high.
If you are just thinking of putting the 2.2T straight in without rebuild and it comes with carbs then nothing lost. You can sort it out with all the other mods to make the 6 work in the 914 and you could always keep an eye open for something else in the longer term. World your oyster and no need to rush.

fourteener · Post by **fourteener** » Mon Nov 30, 2009 10:23 pm

2.2 doesn't have piston squirters either (or some did and some didn't). Does the 66mm crank rev up much faster? The stock 914-6 only had a 2.0T with a 'weedy' 110hp but personally given the choice I'd have this over the 2.0 4cyl.
I think having a six in is so much more than just going faster. Maybe some 2.2T owners could pipe up about the pluses/minuses of this motor.

davidppp · Post by **davidppp** » Tue Dec 01, 2009 12:30 pm

Hello all.

The original 2.0 in the 914-6 was deliberately a step behind the 2.2T in the then current 911..had they fitted the 2.2T they feared it would prove hard to sell 911's!

The later engine has a lot going for it really..much better combustion chamber bigger valves and a stronger case, and 15 HP with more torque spread.

But, as posted above, any sixer is miles better than the flat four..it changes the whole feel and character of the car to hear the great rush of it accellerating with six chokes in harmony..it makes it a real Porsche in all respects..

Kind regqrds
David
DOI..I have a rebuilt 2.2T to sell!

Derek · Post by **Derek** » Tue Dec 01, 2009 3:50 pm

If you go down the 2.2T route try and source a Bosch distributor as the more common Marrelli unit no longer has caps and rotor arms available for it.

Derek