Search found 177 matches

by kterkkila
Mon May 28, 2012 10:05 am
Forum: Race Cars and Track preparation
Topic: Twin Spark Engines
Replies: 341
Views: 201935

Re: Twin Spark Engines

I have never seen a working sensor, do they even exist? They are rare but from what I have got on my hands, maybe 2 out of 5 have been still working. The one I used last time was from 3.0 V6 164, because it was shorter. The system gave alarm if the oil level was below half. But that sensor also fai...
by kterkkila
Sun May 27, 2012 2:41 pm
Forum: Race Cars and Track preparation
Topic: Twin Spark Engines
Replies: 341
Views: 201935

Re: Twin Spark Engines

Funny idea, but actually I used that with Mazda racer 10 years ago :)

But it's not allowed.. I have been using the sensor to check if we need to stop for oil filling, but now the rules changed so that oil level can be checked while adding the fuel, so no need for that anymore.
by kterkkila
Sun May 27, 2012 11:30 am
Forum: Race Cars and Track preparation
Topic: Twin Spark Engines
Replies: 341
Views: 201935

Re: Twin Spark Engines

Kevin, The oils I have tried are Castrol TWS 10W-60, Motul 5100 MC 15W-50 and Motul 300V LeMans 20W-60. I wouldn't be surprised if some other oil would stay better on the engine, but there's no information available on that side. The 1 liter is OK, but 2 liters would be too much. If we need to add o...
by kterkkila
Sun May 27, 2012 11:16 am
Forum: Race Cars and Track preparation
Topic: Twin Spark Engines
Replies: 341
Views: 201935

Re: Twin Spark Engines

Giuliettaevo2, Yes, the guides and their seals are in good condition. I also don't think that this amount of oil could be gone through valve guides even with relatively worn guides with sufficient valve seals. But this is just my thinking. The oil escape drills behind the oil ring must be a good ide...
by kterkkila
Sun May 27, 2012 12:18 am
Forum: Race Cars and Track preparation
Topic: Twin Spark Engines
Replies: 341
Views: 201935

Re: Twin Spark Engines

Vacuum pump could change operation of piston rings, but unfortunately rules won't allow those. Also dry sump cannot be used. All of the oil is escaping via exhaust, there's nothing on catch can. That's why the leakage must be via cylinders.
by kterkkila
Sat May 26, 2012 10:36 pm
Forum: Race Cars and Track preparation
Topic: Twin Spark Engines
Replies: 341
Views: 201935

Re: Twin Spark Engines

Here's some evidences how old TS performing against other brands: http://mut-palvelu.fi/2012/endurance/endu_20120526_momo/tuloskt.pdf That race was driven yesterday at full dry race circuit. As you can see, there was only one BMW and four VTEC Hondas in front of us. I have some ideas how to challeng...
by kterkkila
Fri Feb 24, 2012 12:41 pm
Forum: Gearbox, Clutch and Driveshaft
Topic: Alignment Engine-Gearbox
Replies: 28
Views: 21309

Re: Alignment Engine-Gearbox

I don't have found that big influence on alignment, but few times I have found vibrations coming from imbalance which went away on balancing the shaft and few times the engine rear mounting was modded to too solid. The 6 cylinder engine tend to tilt so that both ends go up and down. If this movement...
by kterkkila
Wed Jan 25, 2012 11:34 am
Forum: Race Cars and Track preparation
Topic: The Orange Cab -MD's New Racer
Replies: 261
Views: 123580

Re: The Orange Cab -MD's New Racer

Impressive Mike, impressive! Thumps up!
by kterkkila
Sun Oct 16, 2011 12:45 am
Forum: Performance
Topic: JK's v6 book
Replies: 266
Views: 130726

Re: JK's v6 book

Actually that was my friends engine. I sold the core to him and as he wanted to use already available knowledge on the development, I recommended him to discuss about cam profiles with RJ. After deeper discussion, he ended up buying cams from RJ to that Milano 2.5 engine. Communication was fine unti...
by kterkkila
Sat Oct 15, 2011 10:22 pm
Forum: Performance
Topic: JK's v6 book
Replies: 266
Views: 130726

Re: JK's v6 book

The newer heads I had, had shorter cams and different pulleys. So the mixing is not even possible here. And as 75Evo told, RJ cams are designed for Milanos which all had small exhaust followers. The cams of this specific case are going to be inspected to be sure what size follower they need. After t...
by kterkkila
Mon Sep 26, 2011 10:10 am
Forum: Race Cars and Track preparation
Topic: Run Tires Opposit Direction of Stated Rotation ?
Replies: 7
Views: 6702

Re: Run Tires Opposit Direction of Stated Rotation ?

It seems that you got your answer already, but I can confirm that I have not had any problems if using tyres backwards either. My experiences are gained with Toyo T1R, T1S and Hankook Z212.
by kterkkila
Fri Jul 08, 2011 10:18 pm
Forum: Engine
Topic: Ooops, I dropped a valve
Replies: 23
Views: 13757

Re: Ooops, I dropped a valve

TS sodium filled valves might be somewhat better I guess, or then I have had a good luck. Have to knock the wood, because I have been racing long runs since 2004 and still got two original exhaust valves.. Other two were replaced when got piston failure and the valves were slightly bent.
by kterkkila
Wed Jun 22, 2011 5:33 am
Forum: Engine
Topic: Ooops, I dropped a valve
Replies: 23
Views: 13757

Re: Ooops, I dropped a valve

Maldi, Did you check the cams and followers after the failure? Was the cam lobe and follower surface OK? In my friends engine, the one I was driving, the exhaust cam lobes were gone really bad. Some of the lift was missing and followers were worn so that the valve lash was something like 3mm or alik...
by kterkkila
Wed Jun 22, 2011 1:09 am
Forum: Race Cars and Track preparation
Topic: No longer a ''budget" race GTV
Replies: 309
Views: 139969

Re: No longer a ''budget" race GTV

One what you could try is bleeding the brake lines backwards. There are pressure bottles for that task available. If you don't get one on your hands, it's possible to use regular brake fluid bottle for that. Just drill two tight holes on cap, one for small hose to connect bleeding nibble (hose must ...
by kterkkila
Sun Jun 19, 2011 11:42 am
Forum: Race Cars and Track preparation
Topic: Drive Shaft CV's keep breaking
Replies: 31
Views: 20903

Re: Drive Shaft CV's keep breaking

It's not easy, but I still hope it would be possible with right materials and lubes. The heat from brakes will boil regular CV lubes. That can been avoided with high temp lubes like redline CV2. Also axial seals of short axles coming out of rear end are prone to start leaking. Also some short axle b...