Cybershots 4.7L Stroker build up thread
05-03-2011, 05:36 AM
#19
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Model: Cherokee
Where have all this works been done?
Well.... good question!!
An good workshop is hard to find here in the UAE
With the best recomandation I got Alyasy 7 Performance
They usualy build that kind of engines
and they are for sure the best, if you want to have an unique engine!!! They did already strokers before and I am very happy with there work! (nevertheless I am there every day!)
What shall I say? They never spend 1 dirham for advertising but I had to wait for my build up 3 weeks to get an apointment!!They are bussy like hell and you sould see who are there customers.... many very well knowen persons!!
Also they participate at the drag race @ yas marina circuit (pro street7 with an Nissan Skyline 1080 RWHP) and at the Liwa dune race. The Nissan partrol above has 2000 RWHP with an 4 step NOS injection out of an 9L V8 race engine
Well.... good question!!
An good workshop is hard to find here in the UAE
With the best recomandation I got Alyasy 7 Performance
They usualy build that kind of engines
and they are for sure the best, if you want to have an unique engine!!! They did already strokers before and I am very happy with there work! (nevertheless I am there every day!)What shall I say? They never spend 1 dirham for advertising but I had to wait for my build up 3 weeks to get an apointment!!They are bussy like hell and you sould see who are there customers.... many very well knowen persons!!
Also they participate at the drag race @ yas marina circuit (pro street7 with an Nissan Skyline 1080 RWHP) and at the Liwa dune race. The Nissan partrol above has 2000 RWHP with an 4 step NOS injection out of an 9L V8 race engine
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05-03-2011, 05:41 AM
#22
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Model: Cherokee
Phase IV: testing, trouble shooting
So, now I have ~400 Km on the clock and everything runs fine. Just the already mentioned bugs are to be fixed. I checked every 40-50 Km the engine and searched for leakages or lose hoses / cables. Seams to be OK. Temperature seam to be OK as well with 190-200 F in city traffic as same as on the highway. Oil pressure is on idle at 18-20 and with 2000 at 50 PSI. So seam to be OK as well. See the pictures below from the first oel change (@160km). Everything clean and clear. I believe this is an indication for an good workmanship from 7Performance!
First bug to fix are!
- batery to change -- Done--
- small oil leak at the rear side of the oil pan
- small coolant leak at the lower hose connection to the water pump
- exhausted header to be changed with an model from 1999 (car is from2001 and Head from 1999) --bought but not build in jet--
- Accle Injectors to install with new fuel rail.--arranged and ready at Saturday--
So, now I have ~400 Km on the clock and everything runs fine. Just the already mentioned bugs are to be fixed. I checked every 40-50 Km the engine and searched for leakages or lose hoses / cables. Seams to be OK. Temperature seam to be OK as well with 190-200 F in city traffic as same as on the highway. Oil pressure is on idle at 18-20 and with 2000 at 50 PSI. So seam to be OK as well. See the pictures below from the first oel change (@160km). Everything clean and clear. I believe this is an indication for an good workmanship from 7Performance!
First bug to fix are!
- batery to change -- Done--
- small oil leak at the rear side of the oil pan
- small coolant leak at the lower hose connection to the water pump
- exhausted header to be changed with an model from 1999 (car is from2001 and Head from 1999) --bought but not build in jet--
- Accle Injectors to install with new fuel rail.--arranged and ready at Saturday--
05-03-2011, 05:44 AM
#23
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Model: Cherokee
This is the stroker XJ
It runs without any problem! Mean and powerful!
My JK and XJ
Here the actual specs from my XJ
- Cherokee sport 4,0 2001 american specs with 4.7L stroker
- 31" Cooper STT with no R&P and automatic transmission
- 4,5" Skyjack full lift kit
- k&N air intake
It runs without any problem! Mean and powerful!
My JK and XJ
Here the actual specs from my XJ
- Cherokee sport 4,0 2001 american specs with 4.7L stroker
- 31" Cooper STT with no R&P and automatic transmission
- 4,5" Skyjack full lift kit
- k&N air intake
05-03-2011, 10:33 AM
#26
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Year: 1997
Model: Grand Cherokee
Engine: 4.0
Nice build man. Great job. Hey whats that lump of goopy stuff to the left of the oil drain plug picture? Was that an exhaust gasket patch?
05-03-2011, 10:08 PM
#27
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Model: Cherokee
Difficuld to day without dyno run. Target was 275hp @ 4900rpm, 333lbft @ 3500rpm The 4.7L is an "torque monster". I lowered the CR to 9.1-1 during my build up. I needed to keep the deck witn 0.020" in order to have no problems with the push rod lenghs. So I will lose 5 HP. In the next weeks I have to install the Unichip Q anyway and then I will have a Dyno run before and after.
From what I feel now, it won't be fare away from the 275HP. The weels starts spinning so quickly, that I have to be careful at the traffic light
Aaaannnnddddd I still have some extras for the engine ongoing.
From what I feel now, it won't be fare away from the 275HP. The weels starts spinning so quickly, that I have to be careful at the traffic light
Aaaannnnddddd I still have some extras for the engine ongoing.
05-03-2011, 10:17 PM
#28
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Model: Cherokee
It took me 2,5 months from the order of the parts till the first start up. Costs 5000$ and some hairs from my head....but was worths evey cent. It is so powerfull and sounds so mean in low RPM....keeps me smiling evey time I drive it!!!
