What is the best 16v to start with for a G60 conversion?

Re: What is the best 16v to start with for a G60 conversion? (thetatau87)

hell you can run stock compression on a 16V (either).
been done.
i think the 1.8 is 10:1 and 2.0 is 10.5:1?
Dont need boost, use octane

Re: What is the best 16v to start with for a G60 conversion? (mrkrad)

This is a daily driver (85mi/day average) so anything over 93 octane is out. Except on track days Then it's bring on the toluene. Besides I like boost too much to give that up. 10:1 is a bit steep for boosting maybe 9.5:1. I need to calculate the optimum compression to boost ratio. I bought Corkey Bells "Supercharged!" book and I'm still reading it.
Are all 16v short blocks the same, or are there ones that had better rods, cranks, etc...

Re: What is the best 16v to start with for a G60 conversion? (thetatau87)

Just remember when changing the combustion chamber of a motor, the "squish" area you can increase the chances of detonation. So be mindful of that before you start out.
Going from 10:1 to 9.5:1 would probably be one of those cases where you can do more harm that good.
Going from 10.8:1 to 9:1 maybe a good choice.
There was an untercooled 10:1 16V running around at over 10psi till the guy tach'd it out at like 9000rpm. It then went kaboom. I guess the Type-R sticker didn't hold it together.
Give it shot, either way, a 16V with something that can produce boost at the desired flow rate would be a blast. If you can cam a 1.8 16V and rev it to 7500, then find something that will flow at those rpm's and have a blast.
In most cases, for reliabilities sake, you're probably not gonna find a low compression G60 powered 16V making the big #'s a turbo will make as a daily driver that doesn't need constant service.
Especially if you port/cam that 1.8 16V head, you're gonna way outflow the head.
There's a corrado on ebay, with a 58mm pulley on a 16V. I'm guessing theres some serious punishment going on with that g-lader. or he's got some special g-lader that we don't have.
What kinda horsepower #'s are you looking for really?
210? 250? 300whp?

Re: What is the best 16v to start with for a G60 conversion? (mrkrad)

Good call about the squish area. I know that you need the right squish to get good flame propagation. I'm hoping Corky will have some words of wisdom is his book on that. I was leaning toward the extra displacement of the 2.0L anyway. So going from 10.8:1 to 9:1 might be the ticket.
I'm not really shooting for any particular numbers. I just want to put together a solid combination and see what it puts down. I know it will be much more than my stage 5 G60 so I'll be quite happy. I'll port the head/intake/TB and put some decent cams in, but I still want to keep the low end grunt that makes me love superchargers so much. I don't want to have to spin it to the moon to make power either. This will be daily street driven. I don't see me getting over 7K.
The plan is to switch to an M90 w/ FMIC after I get it running. I just want to get it together and running well with the G60. Then I'll toy with the Eaton. I want to play around and see what putting the TB before the SC will do for it. The M90 will have plenty of flow and I won't have to spin it fast. Eatons like lower boost applications. I'll need to find the biggest pulley I can to slow it down so I don't over boost it. I'm thinking that the combo of higher compression with plenty of flow from the M90 at around 10psi will be a great steet combo.

Re: What is the best 16v to start with for a G60 conversion? (thetatau87)


about 11 psi (70mm pulley).
Compression is ~8.8:1, like the factory 16vG60.

Nope stock G60 at the moment. A/W would be a tight fit

HEatons probably aren't the best choice, read the Supercharged chapter on Roots.
One thing to think about that is you use a bigger blower, you don't have to spin it as fast to get the same amount of air. Less heat, less noise.

Re: What is the best 16v to start with for a G60 conversion? (thetatau87)


Corky has plenty to say about it.
the 2L's compression is a little high for daily driver running IMO.
There are a bunch of us running stocked gaskets (both turbos and 16v's) with plenty of success.
I'm running pump gas, stacked gaskets and no IC at the moment. As long as I program in some boost retard, I get no detonation, even at 80C.
Probably not the best setup for all ot power, but motor is a blast to drive.

Then this setup wil suit you fine. Leave the stock cams or a set of 260/260's if you want to rev no more than 7K. There's plenty of power down low with the SC

I'll be interested to see how the HEaton does in the app. http://****************.com/smile/emthup.gif

Re: What is the best 16v to start with for a G60 conversion? (OttawaG60)


How thick are the gaskets that you stacked to get to 8.8:1? How many?

This is why I'm looking to use the M90 not the M62. The M90 displaces 90 ci/rev (1.5L.) On the T-bird SC it makes ~12psi on a 3.8L V6 stock. I should be able to spin it much slower and still get plenty of boost with less heat and noise like you said.