Clevo120Y

Wolfy is the grey XF with yellow bumper number 69

Here is a vid of last night, just a short one of the first few laps, the new engine flies and I was pumped to see it in person, a great result for the first stage of the tune with more development to come on this one. I will tell more of last nights run later tonight. Enjoy

Well had a meet at Albany speedway last night and what a meet it was, nothing special in regards to wombat, the car ran well and was on pace. Carnage between every street stock racer was the call for the evening haha drivers getting relegated positions everywhere and drivers ramming into each other after the races and then mouthing off at each other in the pits

I bought a head being told it was a gas head, I went to the wreckers the other day and the 4 au engines there all had the same casting on the front, none of them were a dedicated gas engine so thinking I just have a normal AU head.

I agree 180 to 190 is ideal temp

Has anyone got pics or a cast number for these heads, how are they different to stock AU heads. Thanks

Yeah good work mate, best experience is hands on experience with some great ozfalcon guidence

I agree with all of the above, don't keep pulling fuel jet out you have to tune the air bleeds.

Yeah she got herbs mate

short vid of me firing it up today while checking the old girl over.

Cheers guys, yeah feeling good at the minute, another surgery early next year then see how we go.

Won't be too many updates until after Christmas but thought I would get the thread started now the car had 1 meet under it's belt.

I did all this work over a year ago but the car raced for the first time on the weekend, Wolfy (the owner) was over the moon with it's performance and said it was bad ass fast, so much so he rekons he needs to grow some bigger balls to drive it properly hahaha. I was talking to him today about how it went as I wasn't there and he said the power was everywhere, as soon as you got on it she was flying, previous engines he's had the power was delayed or had to build up speed, this engine pulls out the corners like no other and he didn't find the end of the power curve as he ran out of track. He said that he has to get used to it and was sitting behind cars just getting a feel for it but if he had bigger balls he could easily passed cars if he commited in the corners, looking at lap times and top speeds on the my laps site the car was running competitive times and speeds for it's first time out and him not using the car to it's full potential.

I'm stoked with it and it shows that the port design and size is perfectly matched to the cam and intake as there is no delay in power from lower in the rev range all the way to redline, there is more development work for this combination to come that WILL make it faster again and I haven't even tuned it yet, the 3rd of Jan I will get a look at it on the track and start the fine tuning process and slowly get the tune spot on, the production titles are at our Albany track this year so hopefully some home advantage will have us eating some more injected cars this season.

Hey guys, now that another race car that I developed the engine for is up and racing I thought I would start a new thread for it to update it's progress.

This is another XF but in the production class which is the next step up from the street stock cars. Another carby crossflow but SO much more freedom in development, modified intake manifold, ported head, balanced assembly, aftermarket ignition, electric water pump, 350 holley (modified), roller rockers etc etc but must be pump fuel.

So most of the stuff I have shared with you before but I will go over it again, this engine runs a 86da block, EF crank, 200 rods with 13cc pistons, ported XD head with 1.86in intake valves, 1.6in exhaust valves, yella terra adjustable rollers, head flows 212cfm. Comp is 10.5/1 with 6al msd ignition off XE dizzy, electric water pump, 1 3/4in long tube header. I ported the head, modified the intake manifold and built/modified the carb. I also speced out the bottom end but it was put together by the owner

The cam is a solid flat tappet that the owner already had so all my calculations are based around that. Cam specs are: In lift 562, ex lift 571, duration at 50 in 251 ex 254, ICL 105 LSA 106.5

So here are some pics of the head, manifold and carb work.

On a better note the production XF went well for a first untuned run, it was the southern production series round so the states best came out to play, even tho the car ran middle to back of the pack it finished on the lead lap every race and it's lap times and top speed were competitive. Wolfy is the old boy driving it and he had a blast, he thinks it's fast and with more seat time should be right up there, he hasn't raced for a couple of seasons now so he will get better and he has never had a car this fast before either so looking good when I get some tuning time into it.

I know but the thread needed at least one pic of an engine hahaha

Here you go Rob

I put the same effort and detail into a stock engine as I would a race engine, it is the only way you can make sure an engine will last and that you can demand something from it.

Built properly IS checking every clearance, on a slapper you can get away with chucking it together.

You lot jinxed it, no racing tonight the car is broken, the diff and front end still need work and they run out of time. Next meet is the 3rd of Jan

Cut it out will ya!! We have to race tomorrow night

Also on what wagoon said, the stock rotating assembly is good, the street stock engine has stock crank and rods with arp rod bolts with no balancing, stock harmonic balancer and stock rockers. It gets spun to 6000 lap after lap without a failure, if it's put together nicely and tuned well they last fine.

I'm using the isky 235d springs now, recommended by Ando and I will test them at the end of the season, to use the isky with 3 groove valves you have to machine your retainers to suit the inside and outside diameter, also use the locators specific for the isky springs as well.

Crow 7738-12 ?? Off the top of my head, single spring with damper 110lbs seat pressure.

Don't use crow springs, half a season of racing and the crows went soft, set at 110lbs they were 85lbs when I tested them again, crap crap crap don't use them.

Thanks mate glad you enjoyed the thread, the old girl goes hard and is proving to be very reliable, some of these guys up the front have hurt engines really bad a number of times during a season and ours just flies race after race.

Cheers