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Discussion Starter · #1 ·
I want to run higher compression than a G60 with less boost. In the neighborhood of 9.0:1 with 10 psi. What would be the best foundation for a boosted 16v? 1.8L, 2.0L, year???
 

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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
 

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Discussion Starter · #4 ·
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...
 

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Discussion Starter · #5 ·
Re: What is the best 16v to start with for a G60 conversion? (OttawaG60)

OttawaG60 -
What boost and compression are you running? You have air/water IC, right?
Eventually I'll stuff an M90 Eaton w/ FMIC in there, but I want to get it running with the G60 first.
 

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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?
 

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Discussion Starter · #7 ·
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.
 

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

Quote, originally posted by thetatau87 »
OttawaG60 -
What boost and compression are you running?

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

You have air/water IC, right?

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

Eventually I'll stuff an M90 Eaton w/ FMIC in there, but I want to get it running with the G60 first.

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.
 

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

Quote, originally posted by thetatau87 »
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.

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.
Quote »

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.

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
Quote »

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.

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

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

I am using a 1.8 16v, with ceramic coated pistons. I know a 2.0 is a pretty popular choice, but I figured 1.8's are cheap, in the event I blow it up.....
I use a stacked head gasket, 3.5 bar FPR, 30 lb/hr injectors, and with the exception of my fecally enhanced chip(BBM), it runs pretty well. I'm still up in the air whether to buy the sns chip, and risk 100 bucks, or go for the SDS, and know it will work..either way, it's a great motor.....
 

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Discussion Starter · #11 ·
Re: What is the best 16v to start with for a G60 conversion? (OttawaG60)

Quote, originally posted by OttawaG60 »
Compression is ~8.8:1, like the factory 16vG60.

How thick are the gaskets that you stacked to get to 8.8:1? How many?
Quote, originally posted by OttawaG60 »
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.

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.
 

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

I'd recommend just using 2 ABA, that'll put you into the low 9:1's
More than safe enough for our low boosted engines.
I'm going to switch to that when I replace the head.
Here's the gaskets I used.
http://community.webshots.com/...PlpMX
I'll be interested to see how the M90 does. Keep me in the loop
 
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