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Re: Jim K. 3.2 engine
Posted: Mon Aug 29, 2016 1:34 pm
by Jim K
Well, now that you have the new rods, the best thing you can do is carefully grind off those ugly lumps from both ends, balance the rods end-to-end and then polish the area as best you can. If shotpeening is available, go for it but cover the bearing and pin surfaces. Tip: Very small weight differences can be corrected by grinding a bit off the bolt threaded ends.
Jim K.
Re: Jim K. 3.2 engine
Posted: Mon Aug 29, 2016 1:45 pm
by maxiboy
Jim K wrote:Well, now that you have the new rods, the best thing you can do is carefully grind off those ugly lumps from both ends, balance the rods end-to-end and then polish the area as best you can. If shotpeening is available, go for it but cover the bearing and pin surfaces. Tip: Very small weight differences can be corrected by grinding a bit off the bolt threaded ends.
Jim K.
thanks again Jim. be re reading you book today to refresh the right way to do standard rods
awaiting on a set of max rods and will collect if they come at the right price. but thought i would acquire these just in case. either way will sort these so if i dont use i can ebay them. thanks again.
Re: Jim K. 3.2 engine
Posted: Tue Aug 30, 2016 11:42 pm
by alterro
Jim,
I have a question. What do you think of that instead of skimming the heads you could use thinner head gaskets (from normal 1.6mm to 1.0mm in case of 3.0 24v should increase CR from 10.0 to ~11.3). In theory it should be better because you decrease squish and increase combustion quality.
Re: Jim K. 3.2 engine
Posted: Wed Aug 31, 2016 3:34 am
by Jim K
Going from 1.6mm to 1mm head gasket will only raise CR from 10 to ~10.7:1 but you are correct, squish is very important and one way to promote it is to raise the piston by using offset conrod small-end bushings, a relatively simple job for any respectable automotive machine shop. For best results/reliability, I would use oem gasket, offset small-end bushing and mill the heads. Aim for squish clearance of no less than ~0.8mm to be safe...
Jim K.
Re: Jim K. 3.2 engine
Posted: Wed Aug 31, 2016 6:31 am
by alterro
You're right, 10.7, my fault.
So the only reason why would you want to raise the piston is to use the original gasket, right?
Changing gasket's thickness to 0.8mm would even increase CR to ~11.0.
Re: Jim K. 3.2 engine
Posted: Wed Aug 31, 2016 9:19 am
by Jim K
I am not sure traditional gaskets can be reliably made in very low thickness, so I prefer to stick with the Goetze-Reinz quality track record. How thin AND reliable can gaskets be made?
Jim k.
Re: Jim K. 3.2 engine
Posted: Thu Sep 22, 2016 2:06 pm
by maxiboy
Jim K wrote:Hahah, you can blame the weatherman for this, plus the fact that I'm away on vacation from today and will be back end of the month. Talked with the dyno/mapper yesterday and we decided to do
IT sometime in September. In the meantime, all is well with the two gta fans, even in this summer heat. Truth is, I drive it very little. I use the 1.8T instead for short trips -besides the Hyundai family 'workhorse'. Don't worry, the project ain't dead just yet!
These last few months -on and off- I've been looking to improve flow in the 1.8T heads and I've made good headway. The final outcome along with full engine builds will be part of the new book on 24v and 1.8T engines. NO dates yet so don't ask. I still say, if the 1.8T was made available to more markets, there would be
far fewer V6 owners...
Jim K.
September is nearly over ..... has it happened yet
Re: Jim K. 3.2 engine
Posted: Thu Sep 22, 2016 6:32 pm
by Jim K
Its cooking.... but its also hard to part with ~400€ ...
Jim K.
Re: Jim K. 3.2 engine
Posted: Thu Sep 22, 2016 11:46 pm
by 75evo
Crowd fund it! Create a kickstarter account with something like...
"Would YOU like to see 320 bhp on an Alfa V6? Well today's your lucky day! Your chance to win ME (Jim K) a Euro 400 trip to the dyno! Sponsors of 50 euros or more get an autographed dyno sheet"
Just make sure your kickstarter page has lots colors and cool photos. Like a nice blonde on the 75's bonnet should bring in some big moolah ( Make sure she's not a heavy one, or she will dent the bonnet
)
Re: Jim K. 3.2 engine
Posted: Fri Sep 23, 2016 6:41 am
by Jim K
Ok, you be my ad manager and the
first contributor of 50€! You have my bank details!
Hmmm, how about if I put up as a lottery prize the two spare modified 24v heads? They are finished and complete, with flowbench measurement to boot!
Jim K.
Re: Jim K. 3.2 engine
Posted: Tue Sep 27, 2016 12:03 pm
by maxiboy
saw i great idea on another forum where a seller sold 600 @ £10 lottery tickets to raise the 6000.00 he wanted for his car
he got the money and someone got a bargain... wasn't me though.
Re: Jim K. 3.2 engine
Posted: Tue Sep 27, 2016 6:33 pm
by Jim K
Hmmm, not a bad thought!
Two snags here: few interested people and how/who picks the winner?
Jim K.
Re: Jim K. 3.2 engine
Posted: Wed Sep 28, 2016 7:10 am
by 75evo
Sell the car or sell the dyno session results?
I'll definitely chip in a bit for your dyno. I want to see some results.
Or maybe you can setup a betting event.
"Will My 3.2 have 300 bhp? That's the Euro400 question and YOU, YES YOU with the bad yellow teeth, hold the key to the answer! Place your wager!"
You're like Ladbrokes. Ladbrokes where the lads go and end up broke.
Re: Jim K. 3.2 engine
Posted: Wed Sep 28, 2016 9:51 am
by maxiboy
Jim K wrote:Hmmm, not a bad thought!
Two snags here: few interested people and how/who picks the winner?
Jim K.
should be loads of interested people wanting modified V6 heads
and if you fly me to Greece for a few weeks i will make time to pick a winner lol
Re: Jim K. 3.2 engine
Posted: Tue Oct 04, 2016 4:42 pm
by SydneyJules
I'll buy the heads for 400E?!