Mark 8 cooling fan upgrade

MalcolmV8

Well-Known Member
Established Member
Joined
Mar 27, 2003
Messages
7,353
Location
Tampa, FL
Since it's a single speed fan I imagine a relay could be used to power it with the original power wire being used to trigger the relay. If current draw is a concern.

Correct. I'm trying my clean and least amount of wiring and adding parts solution first. Worse case it burns up the relay(s) in the CCRM box and I just get another one and then just use it to trigger an additional external relay.

That sounds crazy hot for being on e85 at cruise. Any chance a radiator hose is collapsing?

For the most part its fine. I'm referencing one of those really hot days we had about 2 weeks ago around 4pm at the peak heat time.
 

cj428mach

Well-Known Member
Established Member
Joined
Sep 21, 2012
Messages
7,609
Location
Kansas
Correct. I'm trying my clean and least amount of wiring and adding parts solution first. Worse case it burns up the relay(s) in the CCRM box and I just get another one and then just use it to trigger an additional external relay.



For the most part its fine. I'm referencing one of those really hot days we had about 2 weeks ago around 4pm at the peak heat time.

I don't know man something doesn't sound good. 244 degrees at cruise is a sign of something not being right.

Even my 428 Mach was staying under 200 at cruise with the ac on when it was 100 degrees out. Thats a big old cast iron motor crammed in a tiny engine bay with a 3 core brass radiator, drinking gasoline, not the most efficient setup.
 

MalcolmV8

Well-Known Member
Established Member
Joined
Mar 27, 2003
Messages
7,353
Location
Tampa, FL
Well I'm thinking over the years I've changed water pumps many times, radiators, even engine block. About the only constant is my 170 t-stat. I wonder if it's a faulty unit that doesn't open all the way and restricts coolant flow?

On the other hand I know another local KB 2.2 terminator that did the killer chiller conversion and on a really hot summer day in stop and go rush hour traffic he got so hot he over heated and had to pull off the side of the road for an hour and cool down before going further. I don't recall if it was just the intercooler fluid that boiled over because of the a/c not keeping up or if it was the engine coolant too.

I blame a big part of my heat troubles on the whipple. Now that it's gone we'll see how that changes.
 

racebronco2

Well-Known Member
Established Member
Joined
Sep 23, 2003
Messages
7,268
Location
palmdale, ca
Malcolm, part of your problem is you do not have one of my Real Heat Extractor hoods. I know with my car parked you can feel the air from the fan by sticking your hand out the window. Barely but you can feel it. You are correct that the fan turn off at highway speeds around 35mph. I have a switch in my car that lets me turn the fan on at any time. Running on track with the fan on made Zero difference. The car didn't run hotter or cooler so the shroud did not restrict air flow.

One of my last track days temps were in the 105* range, Ait2 were 150 and engine temps were 220. Speeds were from 40mph to 120mph.

My engine temp is usually about 200* cruising in 100 Degree weather.

It seems like the KC is attributing to the higher than normal engine temps. It could also be your radiator since these cars are 11 years old.
 

MalcolmV8

Well-Known Member
Established Member
Joined
Mar 27, 2003
Messages
7,353
Location
Tampa, FL
Heat extracting hood would be great :) your temps are similar to mine when I have the killer chiller turned off so I don't think my temps are to far out of line. Radiator is only 3 years old, found brand new old stock.
Now that the 2.9 is gone I will re-evaluate temps in hot weather. I have a feeling a lot of my heat issues will be gone.
 

MalcolmV8

Well-Known Member
Established Member
Joined
Mar 27, 2003
Messages
7,353
Location
Tampa, FL
I wasn't looking to buy. More curious about the set up change.

In short it wasn't working with my new setup. The new high compression motor is to responsive with RPMs. It wraps up and down so fast compare to a stock "lazy" motor and trying to spin the 2.9 up and down so fast is a lot of inertia to change rates so rapidly. It also doesn't help the pulley combos I ran to spin it.

Basically my car couldn't keep the lower pulley's alive.

Breaking them left and right
v1lmBjHXmInW7GTx9OLh7rDeIvXPfAPLk02nqIzAPS1mRhmiHjy7D77fJ43topPSCm8DO8jWqpzF3hOhuGef_1shAmUsFMuGUoWnWctyX-NewMT8FZrwJHSE8RJSi_-1PLMd4pjxx6ycGmFHnX_xrwt7dkd-T_dPK0DcUu_JZ666_x_GkdLk6avWa0tr_kx45AQZgOUQQz7cTppdPeWhNmirBc0FFlDLmYSj2VprE6hg4DX3FvxsrpC_XxiYZ32lhdcizr8kYCz2aQLy_V4MfoPXcyvqes5dWXqFmGH4BGrcH7xektk-YdyWolyGGrWdCRB4QiVxXS0xTpGjniQ6TBS4OFJoCTkr1CbHLXrln9PlCNZcvHtqlDkcMyIiW3zt0ctZQzqIsktmcBJwQYlVub9sIAAtTQza_e2abOUHZiwkH0sOUP764864GzQL2caqCJfhMUsDRKoprjEn-KlXX11rFPbtTEkXIVUIb3QjH8W17OW1UHhM2qBPBoY2UYZNvHp7VOrzf8kWOdT-qnnLY9nH_T8DLLVlPvqR_BcNWnpPtmX0WlPpv1i_SFEUecjoIzy2p-jugszZSaRNDApx0FZ92NKyCig=w974-h730-no


hysZYfQafcQ28ljFgVm6v_QBmsZWiJ_rR7N6-mRE5xOUch1IGbLd6JGO3kzjShzVGgytCr0QfgP57_6MP6hym5TsYaxNAsoY1xLjxSWd0KpFJRklDmjgDk6f7wr1H6u6l0peJ-UkdBHMPMmwC_nBTRpOEbI4H9VGs8hrQlFfmelNVpVkPWLoabfHwcwcxVXa62SgWIkeJ7KcqRNogHMhgE_uQLfr2TJ92TY620to0DEOntOyvI14iOZVTMK7CQfpTRNzJwiOiBTMUjFIzdXlQmoLbTen6NZiPKZYBQX1T9f0MGLrf-HFeAsmrnCRtnZQk5QH6CtHhvtAsy17oZ3HKQ0eQ3_rxikCZRLBEnZNs6uQOmssGlLEJSfMMaqDW5b0LLXzopqn8yzu_69uJOK3x1SMqx0Gu39wqVTxhDcxP2QBIxekq2g-wA9zrhTBTF0dpEIlVLt-70tHzXiNWzFkWLUEGqJNdG6hnTE_XUNjdvDJRJf-pJkp8PRPI0wxYAhc-NvvcwnpQqkn8tEBGr3f5qsrNkt96G8igLve7EK8aFoh2ZIEmpNHhGOjw0Ed6xVD1gg2aEsygvmMawCBAWkio4lvjEB-W78=w974-h730-no


Even had them break off partially attached and stuck still.
2tCgavu94Tebe86MOd1qNWD7TZiiUkBJ-hsGL1C-5E6sZQZoE2-3IqGk_aBPB72GGeFELm6y5PkE_FK9ytcGb86HtiBRj4gadPL758Y_L4qk3faQwlgBHtoKUwRujWnvBi0F5JziMYpp7ekGGhDMtVyy5IYpt5O9vBdmkGXAOAEwb6EtanAqWps-svyJTimnlxtRhP6DQfLchpeZkOzR0kavxFWXF7EydW5t35xvOTx4a7IIEdy0tuv1vJ7b8CIED5m2Grc7OzIh8RuZiFLRIcVNUHb2fwebCBWItriI0kjGOHmxF5CIQpqQfnqnz-T93yStwrPd-74DTJ4VI8MwOEEYqZcvHkEBMYoVHGFzr4vNAU2l2JiikRtAZbCeaxG7oQynWgeebgvNH4o6jZH3Vr5eIr60Hju5umcSZRHO1e8ZeTQ5Y2hs0WA-8tRTOLCtCtd2HJDt3a3bbZI-knssAq7BNFgcn5b9-h_gofNeTFBPtKKGDEu0l4PmJ6x-vKVU614fJLdf0Cudez5nFeiYgamN1TIPyrLlVCbc-Dfv2FG1NdL-hxPmwb5xF3d1GWwgaUeJN-Zmd7IhpPtfpNJgUO8kVumFF-0=w800-h600-no


Sheered threaded section right off the tri-bar one time
2L8lM88YT-vxLe3u5rK9tmsEih_cxInGMW7L200JG6jWAYqyS94LhLdqdCo8oBrQUnMH_3wZJhuQi-c7BtM2hZaRVcCO98mFo1HTS7gJQqHKGYvuWB42CibxGQLwYuEj_RmubPthyNC-fK9JDlE6BW5iJ1DsuaQN7ujWxll8PGmcs69p_3M2sf30HHqU5Yt5ePyPXSUqN_ipJDb6PvGYmvkeRkHZdBtxh1arESBQIFv2Ui6yPCH-iNVDJle6u5-tvHn9TJYZTrQYUBO3m5oE6HuCC9UYtZMzbJATKPBn0wjkeJH7smW0m7vkxJnFRd0IsSWxhSdOezIXLaSB-EUwE5HSbjQd3DKuem3nH3k74JaT9MkSx7AZVl3be8Fwyxvju2NiMS6ZI1_RV8r8ygdjcE7_bL5Q33SYcWL21tN_PDaJtz_FPZB3VB34jvKMp8TdH7ukKg2UdgrnSdEEIWuzKy3U4UJMRZBrYN8l4m5jbX-GuL2JptPjl0GJlgkb2Vttasdzr6XjlHIGYC-bXFwWmpkhUaC20RJ98bJJaaOEmKIirtlB93x4ZjV2urNnpWxXuPlUF9G6R_dLlbySaL-038sCPl4a0-g=w800-h600-no


I even tried one of Mike's locking hubs from his 4lb pulley kits on the stock lower to brace it all. They're made of hardened steel.
ELc8O-MJPWf7RteDYb1iFydrxCE22fgZwfEFX-MMukastGSJKApo4k2HK39eadAVlAEI9Tp1q55r3UIGFYQ9IGZf5xKwET0KgLPM-9uTsCc1UWnIEIKmk7zMCgo0BUrwk9MpyZG9boQc_JiHT1qwSNSgstjBBE3nTBdMqzdqIs6oBxs9n2rUMrU3Mwo3MY_q2rsHpJNbHeTHKOl3gLxIZnLgiTSHAPHECvXA8LknhzRDa6runOvi4reZybwa8mscP3PKvMj2vOrW2LAxdpCBCUz9zLJv9vzSBK_sFXxmuySDq9_uZNYFZ09x_I5WnGQugFfF9ULaY8qqVn6mZyy37fVASD9OcUh1EHAN1-r7j9Ib6p2OW67btxoRADzFa8NB4pmIiL_AiwFqrpZ_Q13EwPQmtrNAvsijclBygOx_htnjmtgvpHE4SB6XCao-eG4vlonYPnCx2VQ5fjDAuPmFGTuF_LRMSF2Bfe_Pv9OqceH4LZ00QgRlzJ9LFb7dBs1TI0B6in3mXXGR0I-gOb8i1SVrqVonKcCmtA5pCs6Sa8zwiCtUh2LlznH1yKOPh8x-OMdnirGiKUb_wC685hgwy1E3nMM6oLg=w800-h600-no


Destroyed it.
Z1msraW7Mjq6Z7we1Qgz7EDNVxLCA4QygUghDpke8s3qtfTkG83uswWbX7zNtOMj1aoihJsiEfD4viyQvhEbkavv2wYDiRjejXtZeuPLqmfisT6SSstkYl7VL29hqXLs5dd8Z3eIBI1N6quUb48AgQ1ieYBRLAapActuBf26EJ1pSWWJ_lbxT3xWsYN_KLq_fNlb1St9ZunMhR8oz_5Z2igFCuJRBu83rqRTXSDDhGkgA1JuUrsbI5m1M_Abp1bhltGG18NXtMOlSkTXn56owi2xcu6OWQ6kbPqWnUUU4mTsDHGgEp6qOL6S-n8UnFKXsjiSTgQGwvyHW3m8EHW63Q7jYzFIpTnnRCgyNWJBE8zHVQCmd8jJ-C9bfwy29_lE76lnXqBfDNBSYuWMkDQ9mqhaCJuOMLLXUmB_U3SFJkr-8WS47C0k6BRnSCGkO25fw0OO0VW0fc-bF7C1V3r3Va2ircgy_5xP6OZ4dA6q7vpD3wiYve4_GJ1_jGXCjo70uCyQAiZcxsrqdH8GTCwuD26jl1VhyIMZYIhMHOTwAbkU7wXZwc1Ec-ttGOynda7Q1wXK9DtXYlx6S5HIoXeimjHj1GojLbk=s730-no


2wwdOt6fSbfu3Er5cvVxmgI_GxCs_0Solc9z1NkGwzZwCdHAKQAEOPYOhl-ZcoN3nY-nnTgPII4KuWHdgwyEXQ3uaCjtYqPr8jJvOnaoUCaSjiV-Xss-rDezZO1suIVi5r-WIfHQRWZ9PZOTHqRPaujtE_HOFW3mQ76LN3u1A9kPa3OGLPG2Sw_vTCXZFSER_HoZ6EdbR86U4-SnUb_XI2DC1BR-br06yRdqr7DJFMXBQuupp4egkBfzx1xUsKPSgf5Tc6Jxx2eA8ZGmhAPRYrRwLfqsGx-iUSk3BfyEUqCtslV6ManufQrGF0_eG4o3QL-97mfHJ0fhb-KLmK0Rzh5fUmKmUXNXumvmPQQjqrIYJsuuX0RbWpwo4fc9QMjSe-0y6LAsJQCRA17ON7SEY6zORyIsJwWiZtYEdv4ujxTV1tSSX2axXNQ8RPaV-XOSzbF07-7Pv3lPbxMw9HU7tu-B8x8kkdmfl6tWiiZ2Dy6tikhXJj24wnfx_tYQtmHzWH5qkuUg4tdI-cYLFLfeEEhWyozpfL5mpmb9_E8BPjEZ2f1UVa_DC-6a-x1MlJx8tSfZMRB7nFELryDW-Z4H5mSdBEzpyYQ=w800-h600-no


YL_lRKvw83N0P8z9tmMXCs91C3ILApv4XKm-syuQWRUXtuqcoCuK7WblbU2z0LgFHgcsj_Z1pePIjhtXL75AOtdzoG1Ebu5kvB3NU1JUJRUjcz837POqSLTJDhlTGylTP88MzjuCS6V_Uhcxp2ZoIAFifqVzbGWkBdkdBMFr6kKpkWlGZRA3LBMTuMWZfDysu7fh5a00mNW4jRrl0hKpa_TujAeEpeNSppfRDaqIo7_MGju6Y9AHL3GRXsCdT57iznnbY3Tfhm1sOqtNQQb0f3v3z90KG2DWgHqrIchHFXHrcIXJyaSwZHoDzhXi5iDqzMzFC7MWJuqZT0762fDuX8VT2VjlgY_gFnv-a-mInrjOqRyvkjQrBacWNWK38k2BfJLFnJmSeQHY5n0L-peNxXXq7-9SyiwhK5KxaHWjtbWQOZ0o6mien9w2n1a7PPJDOXjMETYloz_HkY_C-ZeA6sNsgZZMB3ocOPeI8oDDAmr1H2pOYWyHopBsMWlFCQeuak_eXJOquaJrAG7DD76c_1CtWB-2j8Sgm4U-uPdEvsqxAbjwtrObdr82SwCqtZ7qAOqmaUcvtkmevOrWiVnNHAIIIdp0c7A=w800-h600-no


Freshly installed bushings after 400 miles
ZGY9ezV5Q4TsaJweJBWxZX0lYMAGHkigtD_7cj1FtQe9S4k2d_eonuo5BAr0ywrYNkXkmCGt4uMHU_nupamkw5b55h8fL2lTn7gV9Kql2r_KGExrYkzoG9RU4qiLAY3OmQAF8IqzD9I4VaxMpz1ePbXHDRN-URcQLadc1cMr8EQ4OqWez0qYn6B_JMB4Cin4ndsFy1JwtIbjGiT0cm0Q8FtHbRYRxw_EC9iOKjBVyIdBHr0l6LCQ6JdVZFRFpbEsVm1ByVL8FmEP_f6jZJN8nfAd_KZwpVHMO6hePDwBPhwFCglmG9l1nR4ksSl0HgsH7_YFfWfieDBi8iyfHKvAM4-R5SNswbOe-vRGqu9NzNAxmwA3Cjysq6pnvPwd0jzFMdS9UrEE2KiiFCNymX7TzGu7IiuDXqzAeIRBtb7GJO8Z001aYRP4CZkOUZ7spc3wXoZiX7peQR46D3AfHZYKL75A3k4bAUE_pzD_zp0X_NcudX-Hq1bk2In7IIgt24p0eqqGF2B-7Tlx1pwcx8EFkuDFsjH4-5bOPQq9YX17bgdcGEBt_J5i1oPreBT_tzjOEK9MzDckc9xCywp98vlYcseqmLp4jx0=w800-h600-no


Yup only 400 miles on these bad boys. All the more a lower pulley setup would last me.
2shSWww_ILdv7a6u7WMg7BgHgG8X0VU9UgW8a5No19210BpIU-9fvxSDWxPzs5CQXo5XJ64zG4lRpcTPU174Pvn7M4thHSoXRzgcQZngugIEnHP8FZf2c_eitR1yA1XwQcZm9E0Iwzv7KYs1clwsaka1UO8hUjDIvf8GUGjTSGKCH5TBDmGQn79V3DOzs9a1i-bgtoE4jzMcI-5DJ_ulx2bUFBGCDIvSsGUbvf2u3-i8sDNpeNyOUNILXs53wyClBs9-et54fcoszTNmZsiYwO-MeVRKg2Drzu-BvPz5OH1Ae5ec8UfeYptSBH1sVV-yIWmS9raSsdJvDf4MOUkc8fH4wONjq6RXh26MhWCp2bzi6Xvvr9QUHOUiiqdzy4HJL9NAYOdXPeVS9KcBB-dQcxZu2NFW3Vb4EEbfO4KI9ugpzNOfmuimtrLcODQHx54P_CCQSr8N3lLx5wKTi3EnJVQXNdDN_iTpC5GEiV0fH_vdGErH7mgxdamBQFUZH12HdndTZ4cMSUlmuCQl5TnitrO0E92KBBhzPLzJ5RpjsJdECxv6TrP3U0lvHrxW5HXguWYSB3PkVuRG_bIy4qnlA1T6ebWd6CA=w800-h600-no


Mike and Sam were nice enough to work together and build me a stronger improved locking hub with no hole in the center.
ClGoR9B6CPgnDhxfuSpAmoDK11DpyXkGjzC75u4capAk8teXIkHMabQSqOPLAW687NRiI0hyR83dIcyXMsOKa44-LLjUXeWppZG_MYM3F4F38uDDL52H022o0DPsKtqeSPA-4v-5zYPy9fMG40Ca7IdtA8M4Og93MvM9Hsn4I-vkmf3UWnuhNpnu_nA-HtRS5EeNzH6i3NvqbCH4DyyTZ324xKOHciR3CAr0St8y8nCKobSbKLIKdhaHPMs4cYgG7kN13fPVbsDplSm_ansIBMsqrnNXCSN5f8wyVkMo9r79yPaCNshb5zblbPiRY91PhikpYErvjOIWfp7uaM2jKHM5jnae9xPFGCANGIcNXajopZ1ofT5tm2Gr1Bz26Jy7IBIILPUJUj5nnC2N_dVsNmNoBoGprwx_RDKlB9QPqIExuu5hV_VcxLuLamfvf67guLYRoxu-SpXADxtfI_xN4ZoO7iS0QwM_waQVXoS9smvbNHnGtrrmXU-FoVj2BMhYFSRtQPQURP_sHLV8toVRsVypQp_t6Vrf6jq8bA5svnh96yKapjUr4qL6VsTod9xin0LZF4_kxrIT4zVrSf-Y3tgtJHfP1xU=w800-h600-no


Welded on the inside too
MnUMqeTJoycyzXid_YA00McQFzhYeP-k_smPb5S2REdQUlpKAUZe-KAuIvPxKsP_ykfCox0d7XXGrbel1Wk22_8HjQgSazk0pA15R97UKbEgY_wbSLwFVFJ8WCe3kLDriJFNItNa5hXWDX2oSfCqJ6p_HQPV-FA-ZqKH0Z9BdOmXnkZGqxik5kzsL3jn1oQ_dnNKMjJOTz-JB3lm1IRbllu2eOF_8sXZh2t-9W18PYMiB_d4Bi-LiGMbblt98ecC8wQiTJq9Gis2jMAONHNEPCKiUFIaJ-6tROaSLJmS1vHAv6u-4seKAeZCkUjicY0BRkEJYkLCejORFpzuxhkluNE6yJY-ZDkUK1KSw955bKrPG1eYwKKihWaCXbGxQETdRBOGG7LvrKMWVXjgq0AebrGnRcTJR8IKQ6-V8HiV-jl7n76AZYuutDdb9YUWvuQbwAV0_vXXLEwKNKFjRNJytXkIr-EY_1DmEDBiltdLCup0vKvoWXSyspgpRVjP2fF2UQfcSI5Mfi2ocOb5Mi14Mgb0K9gt32JMNRIi9j7rh2gGWf_U6rvOeTk1-RNQtwhR7VhFxf_IMDknIzk7o40ZzrGVjN06vRc=w800-h600-no


By this point I was going for broke. 4 lb lower or bust. This was my 5th lower pulley combo and setup.
TANuggYFe2e5C99WIM4Qfe0cihrk0gyy4ibLjJkSvGvd80u51ZemwBiSnRq6fYikqRDxQzz3dmJNNz5xkS0zZTQexhq4vhYZJbiTCHgus4oQFWK5exhV6x-2qDXyRcpXyLdjE2sL5vdDS0WYegxIXZRQWyYSDO7uVgqBDOhDeXQGu-5Tbf1ZGrN9jPwmosqKyFlsW2lr5VU8LkM6guvTuZIJHYFHV9VIcDovFZSvXysfWHk68mNefJ7QZXta2aqvKt3tdJ2ohYd2iR1Y-dSJ43Zwj0-CwpUqtBKIb7jgO6F13aPjX4RA-A3i8GkdMR5SyF4cRClzpobLk2YXizCiBi6fySUH1eUQW98o7pkJYOoPOK6gDpnHxOsPBQZBzNoD-7bK27DPWEMBNfop4-0yvfkqCKWmJnhzZ4CmClH-bp6IfqJFbnGbmHPZ3hNrYiHxpvPJIzxsx64G6jlJrE3WPQdQzujzP7UOrflHP9MbCf6JqGdyCJZB86t3ElYoYudTny1SLli9RcPVl8O_rtw7W7i2718eqJ1KdrNaADecaqLXX4cPXq07bhInHMvhtWm1iZj5OI-05nrsb6WdSEYfyu_0Ip8Jea4=w800-h600-no


That 5th setup also featured an almost rock hard bushing material that shouldn't collapse like the others. I ran into some issues with that lower setup that prevented a proper test and in the middle of fixing that I was dealing with the heat created by the 2.9. IAT2s have always been an issue with big twin screws and turning it over hard on the hottest midsummer days caused me to reach temps described earlier in this thread and I just reached the end. Enough is enough. Already notched my hood and had it painted for inlet clearance., had Cobra Engineering make me a custom IAC relocation adapter to the IAC motor would stop smashing my a/c line. Pulled this blower countless times because you can't get to injectors, rails or anything else due to the massive non removable inlet. Decided its time to move on.

Eventually I wanted to make the car a twin turbo but not yet. I went high compression, ported heads and all that good stuff but I spec the custom cams for a blower car and degreed them accordingly because I wanted to enjoy the new motor combo as a blower car first. The short lived bursts of 30 PSI on this motor were absolutely phenomenal. 4th gear down the highway and the Mickey Thompsons would lay black lines down the road as long as you wanted.

Not wanting to give up the blower setup just yet and dive right into a turbo project on this car I decided to just slap a TVS on and call it a day. Still waiting on the inlet elbow as it was back ordered but I anticipate less heat and more drivability and not breaking lowers every 400 miles :) Yeah I'll give up about 10 PSI but at this point I'll take the trade so I can enjoy the car for a while.
 

01yellercobra

AKA slo984now
Established Member
Joined
Oct 5, 2005
Messages
21,125
Location
Cali
Wow. I remember you've been having issues with the lowers breaking. To be honest I hadn't heard of them breaking until I read your posts. I can understand wanting to step down to the smaller blower in order to enjoy the car a little more.

I do want to run a 2.9 with my eventual set up. Hopefully I won't have the issues with the lowers you had.
 

DSG2003Mach1

Well-Known Member
Established Member
Premium Member
Joined
Apr 15, 2004
Messages
15,904
Location
Central Fl
for whatever its worth while doing more research on this setup I found 2 guys over on ModularFords that at the time of the thread claimed to have been powering their Mark 8 fans for over 3 years setup like your with no issues.

Supposedly my fan gets delivered tomorrow.
 

whitedevil95

@the03cobro
Established Member
Joined
Feb 12, 2012
Messages
3,353
Location
Temecula, CA
I have the same issue here in socal. KC on and driving around in 100+ ambient my engine temps get up in the 220-240 range and it scares me. I IAT2s never get that high though. 120ish at most in a 100 degree day. But im on a 17psi 2.3 whipple set up.
 

racebronco2

Well-Known Member
Established Member
Joined
Sep 23, 2003
Messages
7,268
Location
palmdale, ca
The KC preheats the air before it reaches the radiator. The larger the temp difference the more heat will be pulled out. It cannot pull enough heat out if the temps are not that different.

I know the last time i was open tracking in 103* weather my engine temps were 220* and ait2 were 150*. I was running 15psi.
 

DSG2003Mach1

Well-Known Member
Established Member
Premium Member
Joined
Apr 15, 2004
Messages
15,904
Location
Central Fl
It's pretty minimal from my understanding, someone else posted about putting the blades and motor in the stock "shroud" though vs making the mark 8 work but that will reduce cfm a bit
 

MalcolmV8

Well-Known Member
Established Member
Joined
Mar 27, 2003
Messages
7,353
Location
Tampa, FL
The Mark 8 motor is a beast. I don't see the Mark 8 blades on the stock motor doing you much good but I didn't test it either.
 

wckdvnm

Well-Known Member
Established Member
Joined
Aug 10, 2015
Messages
1,333
Location
Kingman, AZ
Is there any benefit of just transferring the mark viii fan blade to my cobra fan motor?

It's pretty minimal from my understanding, someone else posted about putting the blades and motor in the stock "shroud" though vs making the mark 8 work but that will reduce cfm a bit

The Mark 8 motor is a beast. I don't see the Mark 8 blades on the stock motor doing you much good but I didn't test it either.

Yeah if I was to do it again I'd just swap the motor over. I got the blade itself for free from a local pick a part and modified it to run on the stock motor (mount point has to be modded on the blade and a lot of changes made). Side by side they do pull different amounts of air. It's about 1.5X better air pull than the stock blade and it's a lot quieter. You can barely hear it running on high. On a 110+ degree day it was keeping my car right at 206-08 with the A/C on under my cowl hood. But keep in mind I got a new radiator that is a three core and three row.

But even with the thicker radiator I can feel the air being pulled through the grill which with my stock rad I couldn't feel.
 

rymax101

Active Member
Established Member
Joined
Jan 17, 2016
Messages
432
Location
USA, USA, USA
The Mark 8 motor is a beast. I don't see the Mark 8 blades on the stock motor doing you much good but I didn't test it either.
So your just running the mark viii at full speed all the time or did you find a way to get it to be a 2 speed.

Sent from my HTC6545LVW using Tapatalk
 

Users who are viewing this thread



Top