10-28-2006, 12:50 AM
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Location: Granolaville, Washington
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So, some more pics (...Jes!)
I assembled my motor with various bits and pieces today (in-between working on Jes' 3.2 GTA Milano Verde!) Almost have his street car ready to go! (With A/C, P/S and the Souh African 3.2 litre 24 valve GTA in there.)
Any way, I had the valve covers off on my 3.7 to have them heat-coated (just like I did on Jes' 3.2), with a 1600 degree thermal heat dispersant. I love the ceramic coating on the headers and the intakes - only way to go. According to several manufactures of the stuff, conventional powder coatings and even paint on valve covers tend to heat up bearings. Even regular thermal heat barrier coatings are so effective at what they were engineered to do, that they don't recommend using them for valve covers (like reds and the other colours...)
The only one with the heat disseminating qualities is the shiny, high-gloss black (the colour and finish itself is what gives it that heat dispersant value!)
I had the headers done in a silver 2000 degree ceramic thermal heat barrier back in South Africa already, but now I dunno - I may do them in the same "titanium" finish as the intake plenums or maybe not - I may keep the contrast! 3 colours too much for one engine?
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Full-Race 3.7 Litre 24v Milano; Street/Track 3.0 Litre 24v Milano Verde; 2.0 TS '73 GTV; 6-speed 3.45 litre 24v Street 164 LS/Super; '06 Scion XB - Runs! 
Last edited by junglejustice; 11-24-2006 at 09:57 AM.
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10-28-2006, 01:01 AM
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In theory, the thermal heat-barrier coating helps keep high temperatures from the exhaust gasses inside of the headers, increasing the velocity of the gasses as they flow through the headers. In theory...
They are also supposed to keep the engine bay temperatures down along with the induction temperatures. (Reason I like using the thermal heat barrier on the intake plenums too!)
I mainly like them because they protect the headers from rusting prematurely (unless you are careless and scratch them up), the coating looks fantastic and they really dress-up that engine bay!
Notice the vernier pulleys in the previous pics.? We added those as a part of the rebuild - allowed ol' Dawie to play with cam timing on those monster 304 degree intake cams...
Oil-filler neck moved to the front (for better clearance by the brake masters.) Also, this time around Dawie modified the t-stat housing of this "new generation" 156-based build to the front of the motor for better clearance up against the firewall.) Makes coolant-plumbing easier too!
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Full-Race 3.7 Litre 24v Milano; Street/Track 3.0 Litre 24v Milano Verde; 2.0 TS '73 GTV; 6-speed 3.45 litre 24v Street 164 LS/Super; '06 Scion XB - Runs!
Last edited by junglejustice; 10-28-2006 at 10:19 AM.
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10-28-2006, 01:28 AM
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Location: Toronto, Canada
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Finally!
Yes jvr,
What took your a** so long!! That baby almost deserves a see through hood...or at least running without that black front cover!!! Awsome work you and Dawie do down there in South Africa. When you get this thing running you better post up a few sound/video clips. Believe me, I'll be doing the same.
Just imagine the site of your milano, Jes's and my spider at a show....jaws would just DROP 
Now, get back to work. You've been loafin' since last December 
streetfame |
10-28-2006, 03:14 AM
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Location: Adelaide, Australia
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man..
that thing looks like a piece of art! 
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No more Alfa .. 
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10-28-2006, 07:51 AM
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What's up JJ? I'm concerned about you: Sin-bin is a he?
Oh, I like the camber on that front wheel Seriously, the black looks sharp on the red car!
What can I say about the engine: Beautiful, bellissima,... Belongs in the museum for industrial art (as hinted by 87sprint).
Jes
PS. So, are you getting me a set of those spacers for Xmas ? 
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87 Milano Verde - daily driver - Juliet
87 Milano 3.0 Motronic - budget race car - Roxanne
87 Milano 3.7 24v - race car
(Repeating what I suggest or do is at your own risk - be critical)
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10-28-2006, 09:58 AM
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Thanks guys!
Jes, I got you something better for Christmas - I think - let's see...
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Full-Race 3.7 Litre 24v Milano; Street/Track 3.0 Litre 24v Milano Verde; 2.0 TS '73 GTV; 6-speed 3.45 litre 24v Street 164 LS/Super; '06 Scion XB - Runs!
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10-28-2006, 03:05 PM
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what kind of headers do you have, they look very pleasing to the ear.
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my cars
95 LS - 5 speed
87 milano silver - 5 speed 
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10-28-2006, 05:07 PM
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JJ, how long is the timing belt supposed to last on that era of v6?
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'88 Alfa Romeo Milano Verde - 24V, '87 Platinum 3.0 (for sale), 94 LS parting out
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10-29-2006, 01:03 PM
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These headers are the bomb.... On the dyno this thing screams like a cat above 3K rpm! At 4 there is this incredible sound that comes on from those 6 throttles open (later we put the intake plenums back on for final mapping), but it was still sounding out of this world - less ear-piercing and more deep and yeah, well, like a raped ape!)
These are custom headers built for me - available, ceramic coated for 1200 USD - don't even try to fit stock window-washer bottle. Have to move the P/S lines a bit (not a big deal on a road car - just re-clock the P/S fluid tank for maximum stretch on the two lines and then lift them up high and tie-down out of the way...)
Doesn't matter on the 3.7 - No P/S, no A/C etc to worry about... Really, these are race headers (wide open slip fit at the bottom with spring retainer...)
The timing belts last about the same amount of time on the newer generation engines, but overall they are less prone to failing/skipping due to the new belt routing as well as the new style tensioner...
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Full-Race 3.7 Litre 24v Milano; Street/Track 3.0 Litre 24v Milano Verde; 2.0 TS '73 GTV; 6-speed 3.45 litre 24v Street 164 LS/Super; '06 Scion XB - Runs!
Last edited by junglejustice; 11-24-2006 at 10:00 AM.
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10-29-2006, 05:22 PM
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hi jj,
out of curiosity what sort of performance are you hoping to have out this engine when in a car? i.e top speed 0-60mph standing 1/4 etc also with the big v6 what sort of weight will the car be??
cheers
paul
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10-29-2006, 10:08 PM
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with a standerd v6 in a 75 compareed to a 2ltr there is about 157lbs diference.
Paul when are you online lol pm me i need advice about my new engine for my new 75. Its a twin spark 2ltr now well was and the new engine i can get is a 2ltr but not an injection. So i dont think it will work with the carbs i wil have to have the whole managmant to wont i.
jj the engine looks fab. Will you get more than 600 bhp and beat 3.4 secs 0-60 like pauls 75 2ltr.
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10-30-2006, 12:31 AM
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...too many baited questions here for me to speculate on 1/4 mile numbers (and too much riding on it!) 0-60 is of less interest to me ON THIS CAR... (In any case, we all know that sprinting was never the Milano/75/GTV6's strong suite...)
Give me a 2nd gear roll-on against most anything and the car will really surprise you! A turbo T-spark would have to really know his stuff! What gearbox/GUIBOS/drive-shaft setup is Paul running with the T-spark that is holding together that kind of power and allowing street drags reliably enough for it to even be a question?
The 600 hp from the 2.0 turbo sounds VERY optimistic to me any way and so does the 3.4 0-60 - unless it is that purpose-built GTV6 drag car that we are talking about (in which case I just invite him to any track with left and right turns - not a fair comparison in either direction...) Besides, you can never compare the reliability of the turbo to that of the NA motor and if I ever really felt like it, I just have ol' Dawie strap-on 2 turbos and then I too have 600-700 horses!
We know that we have 351 horses at the wheels and 325 foot pounds at the wheels on the same spec engine at sea-level - so that's - what? - about 425 and 375 foot at the crank...? Plenty for the track - it is all going to be in the suspension and the brakes and the roll cage. (On Jes' motor - 301 at the wheels on pump gas and only 10.7:1 compression - 90% of the torque was already there at 2500 rpm and the peak hp came in at 6300 rpm!) I have solid lifters, chrome molly rods and 12:1 compression - we'll just have to see!
As far as the weight - Jes and I weighed it all; engine, headers, intakes, wiring harness and ECU, starters, tail-housings, flywheels and crank-pulleys - everything to make a stock 2.5 12 valve motor run compared to the same for the 24 valve 3.7 litre motor! 415 lbs for the 3.7 and 425 lbs for the old 12 valve! Not bad... Then we droped A/C, P/S and so on after that!!!
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Full-Race 3.7 Litre 24v Milano; Street/Track 3.0 Litre 24v Milano Verde; 2.0 TS '73 GTV; 6-speed 3.45 litre 24v Street 164 LS/Super; '06 Scion XB - Runs!
Last edited by junglejustice; 11-24-2006 at 10:03 AM.
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10-30-2006, 01:45 AM
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you wil have to speak to paul about his car, but i do no he has an upgraded gearbox and dif direct from italy.
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10-30-2006, 06:47 AM
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 Quote:
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Originally Posted by junglejustice
...too many baited questions here for me to speculate on 1/4 mile numbers (and too much riding on it!) 0-60 is of less interest to me ON THIS CAR... (In any case, we all know that sprinting was never the Milano/75/GTV6's strong suite...)
Give me a 2nd gear roll-on against most anything and the car will really surprise you! A turbo T-spark would have to really know his stuff! What gearbox/gUIBOS/drive-shaft setup is Paul running with the T-spark that is holding together that kind of power and allowing street drags reliably enough for it to even be a question?
The 600 hp from the 2.0 turbo sounds VERY optimistic to me any way and so does the 3.4 0-60 - unless it is that purpose-built GTV6 drag car that we are talking about (in which case I just invite him to any track with left and right turns - not a fair comparison in either direction...) Besides, you can never compare the reliability of the turbo to that of the NA motor and if I ever really felt like it, I just have ol' Dawie strap-on 2 turbos and then I too have 600-700 horses!
We know that we have 351 horses at the wheels and 325 foot pounds at the wheels on the same spec engine at sea-level - so, what, about 425 and 375 foot...? Plenty for the track - it is all going to be in the suspension and the brakes and the roll cage. (On Jes' motor - 301 at the wheels on pump gas and only 10.7:1 compression - 90% of the torque was already there at 2500 rpm and the peak hp came in at 6300 rpm!) I have solid lifters, chrome molly rods and 12:1 compression - we'll just have to see!
As far as the weight - Jes and I weighed it all; engine, headers, intakes, wiring harness and ECU, starters, tail-housings, flywheels and crank-pulleys - everything to make a stock 2.5 12 valve motor run compared to the same for the 24 valve 3.7 litre motor! 415 lbs for the 3.7 and 425 lbs for the old 12 valve! Not bad... Then we droped A/C, P/S and so on after that!!!
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hi jj,
i didnt really want to make this about may car as i was curious about yours as im thinking of maybe doing the same as the next project.
im running a colloti 5 speed straight cut box which has been made as a one off for me it wont last forever i know but it has lasted a while so far, i also run a quaife atb diff which again was made for me specifically but i also know that wont last for ever so i had 2 made just in case. also drive shafts have been custom made by a local manufacturer to hopefully cope. i also have a single piece prop shaft again custom made to cope with what im using it for!
secondly with regards to the power. i had it on the rollers only last thursday and the car now has 543bhp at the fly wheel, without nos, but i do run nos on the right occasions and with that it was 698bhp. i must stress though that i dont use the TS head as i found it to restrictive and unreliable for my use so i know hase a 16v head instead.
also with regards to time of 0-60 this is with the car set up to go in a straight line so effectively drag set up which i dont use on the track, and it was recorded using a data logger system not my speedo and stop watch! on preiliminary set up runs the car has run 11.6 standing 1/4.
also with relaibility, anything developed as much as my car has reliability issues especially when you use nos but i only use the car maybe twice a year so it doesnt concern me.
ive seen a couple of twin turbo v6s now and i admit if you did do that i would be in awe of you because that would trully be a ballistic engine, although the one you are already building sounds very very good.
with regards to the weight what weight would the whole car be with the engine in? and im very impressed that youhave jumped up so much in size but it weighs less that is a great achievement.
depending on the discipline im doing that is how i set up my suspension so on a track its good to.
im not sure if you have heard of a car event called ten of the best (totb) but i have been invited to this twice now, itw where the 130 fastest recorded cars from europe go to one event to compete for the title of the fastest car which this may be no suprise is won by jap cars. but my 75 gets invited along on merit.
also what sort of top speed will you get out of the 3.7 with the higher revs etc?
kind regards
paul
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10-30-2006, 10:02 AM
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