Soliciting thoughts & opinions - power upgrades to a 998

[94touring]

Couple different ways to do it. Russell and maybe Calvert sell some very oversized pistons to make a 1225cc or thereabouts.  Otherwise maybe there are specific height pin small bore pistons to make it work out for 0 deck height and the gasket for proper quench and piston to head clearance without machine work or specific rods.  We'd have to research it a bit.  All a 1098 is really is a stroked 998.  The Russell pistons are just one avenue to take a small bore and basically turn it into a large bore.  It would be a really nice motor.   

[MPlayle]

I had found that VMAXSCART was still around and making their A-Series supercharger kit.  I have been researching both as I had more/less decided after my talk with MiniDave to go with some form of "forced induction".

I am actually leaning more towrds the Turbo kit as it was designed by Jet Motors (US based, so more convenient support) who have sold a significant number of the kits and their kits are also being sold by some of the UK Mini parts suppliers.

I have spoken extensively this week with Jeremy about his kit and compatibility with my current engine specs.  I am likely to order the kit later this week.  I already ordered the parts to sort the drop-gear issue from Mini Spares and will in fact be changing from the current square-cut 1.04xx ratio set to the "economy" 0.958 ratio set - resulting in something closer to a 2.95 final.

[94touring]

He estimate what power it will make?

[MPlayle]

I have not heard from Stuart at VMAXSCART with numbers for the supercharger route.  Jereemy at Jet Motors indicated I should see about double my current hp and torque figures with 8-10 lbs of boost with the turbo kit.  Based on the conversations with Dave as well as Jeremy, that would mean between 80-90 for hp and 90-100 for torque (based on 39 hp and 52 lbft for a stock 998 and allowing for a bit more with my current head configuration).

Granted, those may be "optimistic" numbers.  If reality is more like 60-70 hp and 70-80 lbft, then I will have the power gains to easily support the results of the gearing change.

I plan to add a boost/afr gauge for tuning.

[MiniDave]

Good idea on the AFR gauge.

I'm excited to see you do this, it will be the first turbo installation in our little group. However, I thought the point of going with the turbo was not having to pull the motor?

[cstudep]

Cool, sounds like you have a plan. I have always been intrigued by the turbo kits and it's surely got to be the easiest route to go for what you want to do.